On my return home, it occurred to me, in 1837, that something might perhaps be made out on this question by patiently accumulating and reflecting on all sorts of facts which could possibly have any bearing on it. After five years' work I allowed myself... On the Origin of Species by Means of Natural Selection: Or The Preservation ... - 9 페이지 저자: Charles Darwin - 1870 - 440 페이지 전체보기 -
|