Nature, Količina 104Sir Norman Lockyer Macmillan Journals Limited, 1919 |
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Zadetki 1–3 od 83
Stran 224
... tion , a conception that has left its mark deep on the physico - chemical research records of the past thirty years . This hypothesis has been the guid- ing principle in countless investigations , and although it presents difficulties ...
... tion , a conception that has left its mark deep on the physico - chemical research records of the past thirty years . This hypothesis has been the guid- ing principle in countless investigations , and although it presents difficulties ...
Stran 411
... tion , and the embryo and seedling . It is written . with great clearness and is also well illustrated , but the mere educated layman will not get far beyond the first chapter . In part iii . , " The Evolution and Phylogeny of the Group ...
... tion , and the embryo and seedling . It is written . with great clearness and is also well illustrated , but the mere educated layman will not get far beyond the first chapter . In part iii . , " The Evolution and Phylogeny of the Group ...
Stran 613
... tion D - Joel Stebbins , University of Illinois ; Sec- tion E - Charles Schuchert , Yale University ; Sec- tion F - J . S. Kingsley , University of Illinois ; Sec- tion G - R . H. True , Bureau of Plant Industry , B. Gordon , Section H ...
... tion D - Joel Stebbins , University of Illinois ; Sec- tion E - Charles Schuchert , Yale University ; Sec- tion F - J . S. Kingsley , University of Illinois ; Sec- tion G - R . H. True , Bureau of Plant Industry , B. Gordon , Section H ...
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