STAR is categorized by 10 major subject divisions divided into 74 specific subject categories and one general category/division. The major subject divisions are listed in the Table of Contents, together with a note for each that defines its scope and provides any cross-references. For example:

AERONAUTICS

Includes aeronautics (general). aerodynamics; air transportation and safety, aircraft communications and navigation; aircraft design, testing and performance, aircraft instrumentation; aircraft propulsion and power; aircraft stability and control; and research and support facilities (air).

For related information see also Astronautics

Each major division is further divided into as many as nine specific categories, which are identified by category numbers.

Abstracts in STAR are grouped by specific category, the categories appearing in sequential order. Category breaks in the abstract section are identified by the category number and title, and a scope note. Cross-references to other categories are provided as appropriate. For example:

02 AERODYNAMICS

Includes aerodynamics of bodies. combinations, wings. rotors, and control surfaces; and internal flow in ducts and turbomachinery.

For related information see also 34 Fluid Mechanics and Heat Transfer

CROSS-REFERENCES

Individual STAR abstracts are not ordinarily cross-referenced, except for certain conference reports or book translations that have had separate abstracts written for their component papers or chapters. Citations and abstracts of the components follow immediately after those of the parent document. When the subject content of a component differs sufficiently from the general content of the parent, a cross-reference citation also is printed at the end of the category to which it normally would have been assigned if it were independent.

DOCUMENTS ON MICROFICHE

Documents on microfiche (1) are designated by a pound sign (#) following the accession number. The pound sign is used without regard to the source or quality of the microfiche.

AVAILABILITIES

One or more sources from which a document announced in STAR is available to the public is given in each citation. The most commonly indicated sources and their acronyms or abbreviations are listed below. If the publication is available from a source other than those listed, the publisher and his address will be displayed on the availability line or in combination with the corporate source line.

(1) A microfiche is a transparent sheet of film, 105 by 148 mm in size, containing as many as 60 to 98 pages of information reduced to micro images (not to exceed 26:1 reduction).

QUALITY CONTROL MARK

Avail: NTIS. Sold by the National Technical Information Service. Prices for hard copy (HC)
and microfiche (MF) are indicated by a price code following the letters HC or MF in
the STAR citation. Current values for the price codes are given in the tables on
page vii.

Initially distributed microfiche under the NTIS SRIM (Selected Research in Microfiche)
is available at greatly reduced unit prices. For this service and for information
concerning subscription to NASA printed reports, consult the NTIS Subscription
Section, Springfield, Va. 22161.

NOTE ON ORDERING DOCUMENTS: When ordering NASA publications (those
followed by the symbol), use the N accession number. NASA patent applications
(only the specifications are offered) should be ordered by the US-Patent-Appl-SN
number. Non-NASA publications (no asterisk) should be ordered by the AD, PB, or
other report number shown on the last line of the citation, not by the N accession
number. It is also advisable to cite the title and other bibliographic identification.

Avail: SOD (or GPO). Sold by the Superintendent of Documents, U.S. Government Printing
Office, in hard copy. The current price and order number are given following the
availability line. (NTIS will fill microfiche requests, at the standard $3.00 price, for
those documents identified by a # symbol.)

Avail: NASA Public Document Rooms. Documents so indicated may be examined at or
purchased from the National Aeronautics and Space Administration, Public Documents
Room (Room 126), 600 Independence Ave., S.W., Washington, D.C. 20546, or
public document rooms located at each of the NASA research centers, the NASA
Space Technology Laboratories, and the NASA Pasadena Office at the Jet
Propulsion Laboratory.

Avail: DOE Depository Libraries. Organizations in U.S. cities and abroad that maintain
collections of Department of Energy reports, usually in microfiche form, are listed in
Energy Research Abstracts. Services available from the DOE and its depositories
are described in a booklet, DOE Technical Information Center - Its Functions and
Services (TID-4660), which may be obtained without charge from the DOE Technical
Information Center.

Avail: Univ. Microfilms. Documents so indicated are dissertations selected from Dissertation
Abstracts and are sold by University Microfilms as xerographic copy (HC) and
microfilm. All requests should cite the author and the Order Number as they appear
in the citation.

Avail: USGS. Originals of many reports from the US Geological Survey, which may
contain color illustrations, or otherwise may not have the quality of illustrations
preserved in the microfiche or facsimile reproduction, may be examined by the public
at the libraries of the USGS field offices whose addresses are listed in this Introduction.
The libraries may be queried concerning the availability of specific documents and
the possible utilization of local copying services, such as color reproduction.

Avail: HMSO.

Publications of Her Majesty's Stationery Office are sold in the U.S. by
Pendragon House, Inc. (PHI), Redwood City, California. The U.S. price (including a
service and mailing charge) is given, or a conversion table may be obtained from
PHI.

Avail: BLL (formerly NLL): British Library Lending Division, Boston Spa, Wetherby, Yorkshire,
England. Photocopies available from this organization at the price shown. (If none
is given, inquiry should be addressed to the BLL)

Avail: Fachinformationszentrum, Karlsruhe. Sold by the Fachinformationszentrum Energie,
Physik, Mathematik GMBH, Eggenstein Leopoldshafen, Federal Republic of Germany.
at the price shown in deutschmarks (DM).

Avail: Issuing Activity, or Corporate Author, or no indication of availability. Inquiries as to
the availability of these documents should be addressed to the organization shown
in the citation as the corporate author of the document.

Avail: U.S. Patent and Trademark Office. Sold by Commissioner of Patents and
Trademarks, U.S. Patent and Trademark Office, at the standard price of 50 cents
each, postage free. (See discussion of patents and patent applications below.)

NASA PATENTS AND PATENT APPLICATIONS

Patents and patent applications owned by NASA are announced in STAR under appropriate
subject categories and are referenced in the STAR indexes. In the Report/Accession Number
Index, patents are indexed by the NASA Case Number (which appears in lieu of the report
number in other indexes), the U.S. Patent Number, the U.S. Patent Application Serial Number,
and the U.S. Patent Class. Patent applications for which patents have not yet been issued are
indexed by the NASA Case Number and the U.S. Patent Application Serial Number.
NASA patent application specifications are sold in paper copy by the National Technical
Information Service at price code A02 ($4.00 domestic, $8.00 foreign). Microfiche are sold at
price code A01 ($3.00 domestic: $4.50 foreign). The US-Patent-Appl-SN- number should be
used in ordering either paper copy or microfiche from NTIS. Printed copies of patents (which
are not microfiched) are available for purchase at 50 cents per copy from:

Commissioner of Patents and Trademarks

U.S. Patent and Trademark Office
Washington, D.C. 20231

When ordering patents, the U.S. Patent Number should be used, and payment must be remitted
in advance, preferably by money order or check payable to the Commissioner of Patents and
Trademarks. Prepaid purchase coupons for ordering are also available from the Patent and
Trademark Office. The patents and patent applications announced in STAR are owned by
NASA and are available for royalty-free licensing. Requests for licensing terms and further

information should be addressed to:

Assistant General Counsel for Patent Matters/Code GP-1

National Aeronautics and Space Administration

Washington, D.C. 20546

ELIGIBILITY AND REGISTRATION FOR NASA

INFORMATION PRODUCTS AND SERVICES

A variety of services, in addition to the distribution of NASA scientific and technical reports
and of STAR and its cumulative indexes, is available to organizations of the following types
that have registered with NASA to receive specific services or products:

1. NASA offices, research centers, contractors, subcontractors, grantees, and
consultants:

3. Libraries in the United States that have arrangements with NASA to maintain collections of NASA documents for public reference;

4. Other organizations in the United States having a need for NASA documents in work related to aeronautics and space research;

5. Organizations abroad that have established reciprocal document exchange arrangements with NASA.

Only the central service points or central points of document acquisition and control within qualified organizations are eligible to register for NASA products and services. Domestic organizations that may be eligible to receive various classes of NASA publications and services should address their requests for registration or for further information to:

NASA Scientific and Technical Information Facility

Attn: Registration Activity

P.O. Box 8757

B.W.I. Airport, Maryland 21240

Organizations abroad should direct requests to the same address, but to the attention of: International Exchange Program.

AVAILABILITY OF STAR ABSTRACTS ON MICROFICHE

Microfiche of the abstract sections of this issue and other issues of STAR are available on annual subscription from NTIS, Attn: Subscriptions, 5285 Port Royal Road, Springfield, Virginia 22161. Annual subscription rates are $45.00 North America: $90.00 foreign. Abstract sections for previous years retroactive to 1964 are available at the current rates. Microfiche for individual STAR issue abstract sections are not available.