18 SPACECRAFT DESIGN, TESTING AND PERFORMANCE

719 Includes spacecraft thermal and environmental control; and attitude control.

For life support systems see 54 Man/System Technology and Life Support. For related information see also 05 Aircraft Design, Testing and Performance and 39 Structural Mechanics.

Includes land and global communications; communications theory; and optical communications. For related information see also 04 Aircraft Communications and Navigation and 17 Spacecraft Communications, Command and Tracking.

35 INSTRUMENTATION AND

Includes remote sensors; measuring instruments and gages; detectors; cameras and photographic supplies; and holography.

For aerial photography see 43 Earth Resources. For related information see also 06 Aircraft Instrumentation and 19 Spacecraft Instrumentation.

26 METALLIC MATERIALS

Includes parametric amplifiers.

727

37 MECHANICAL ENGINEERING

Includes physical, chemical, and mechanical properties of metals, e.g., corrosion; and metallurgy.

765

Includes auxiliary systems (non-power); machine elements and processes; and mechanical equip

ment.

Includes remote sensing of earth resources by aircraft and spacecraft: photogrammetry: and aerial photography.

For instrumentation see 35 Instrumentation and Photography.

48 OCEANOGRAPHY

789

Includes biological, dynamic and physical oceanography; and marine resources.

64 NUMERICAL ANALYSIS

For related information see also 54 Man/System Technology and Life Support.

803

Includes iteration, difference equations, and numerical approximation.

Includes cost effectiveness studies.

76 SOLID-STATE PHYSICS

Includes superconductivity.

For related information see also 33 Electronics and Electrical Engineering and 36 Lasers and Masers.

77 THERMODYNAMICS AND STATISTICAL PHYSICS

89 ASTRONOMY

823

831

Includes radio and gamma-ray astronomy: celestial mechanics; and astrometry.

831

827

90 ASTROPHYSICS

Includes cosmology: and interstellar and interplanetary gases and dust.

91 LUNAR AND PLANETARY EXPLORATION

832

Includes planetology; and manned and unmanned flights.

For spacecraft design see 18 Spacecraft Design, Testing and Performance. For space stations see 15 Launch Vehicles and Space Vehicles.

Includes management planning and research.

Includes information storage and retrieval technology: micrography; and library science.

For computer documentation see 61 Computer

99 GENERAL

Programming and Software.

GENERAL

N.A.