relative value processes causing (10 Ergebnisse)

Zustand: Poor. This is an ex-library book and may have the usual library/used-book markings inside.This book has hardback covers. With usual stamps and markings, In poor condition, suitable as a reading copy. No dust jacket. Please note the Image in this listing is a stock photo and may not match the covers of the actual item,700grams, ISBN:

PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000.

HRD. Zustand: New. New Book. Shipped from UK. Established seller since 2000.

HRD. Zustand: New. New Book. Shipped from UK. Established seller since 2000.

Zustand: Good. This is an ex-library book and may have the usual library/used-book markings inside.This book has hardback covers. In good all round condition. Please note the Image in this listing is a stock photo and may not match the covers of the actual item,750grams, ISBN:

Zustand: Good. This is an ex-library book and may have the usual library/used-book markings inside.This book has hardback covers. In good all round condition. No dust jacket. Please note the Image in this listing is a stock photo and may not match the covers of the actual item,750grams, ISBN:

Paperback. Zustand: Brand New. reprint edition. 304 pages. 9.25x6.10x0.64 inches. In Stock.

Taschenbuch. Zustand: Neu. Neuware.

Taschenbuch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - THE origin of species, the way in which evolution has taken place and is still progressing, seems, even now, to remain an open question. So much so, that three absolutely diverse theo ries of evolution still find their adherents. These three main theories are so different, that it would seem as if the real na ture of the process of species-formation must for ever remain a subject for speculation only, and as if good facts are wholly wanting. A minority of Biologists adhere to Lamarck's theory of the inheritance of adaptative changes induced by the environ ment; some incline to the view of Darwin and Weismann, that natural selection on small, individual variations gradually changes species, and still others believe with de Vries, that new species spring into being spontaneously, by mutation, saltation. Judging from this diversity of opinion, it would certainly seem as if no important headway had been made since Darwin. This is very surprising, when we see how in the last fifteen years Genetics has become established as an actively develop ing branch of science, and counts by hundreds the Biolo gists who are engaged in genetical experimental investigations. All the data thus acquired, should have their significance for an insight into the process of evolution, the origin of species.

The Hague, 1921. 294 pp. Cloth.