 ... to know the histories of the animals and plants upon which they feed or upon which their food is nourished; the histories of their enemies and friends and the friends and foes...  Science - Página 284editado por - 1920Vista completa - Acerca de este libro
 | Smithsonian Institution. Board of Regents - 1881 - 806 páginas
...original plans the Commissioner insisted that to study only the food-fishes would be of little importance, and that useful conclusions must needs rest upon a...of investigations purely scientific in character. The life history of species of economic value should be understood from beginning to end, but no less... | |
 | United States Fish Commission - 1883 - 496 páginas
...original plans the Commissioner insisted that to study only the food-fishes would be of little importance, and that useful conclusions must needs rest upon a...of investigations purely scientific in character. The life history of species of economic value should be understood from beginning to end, but no less... | |
 | John Michels (Journalist) - 1918 - 676 páginas
...and the general public that in the elucidation of the economic problems which Congress had imposed it would be of doubtful value to study only the major...of investigations purely scientific in character. ' ' Baird 's reputation and official position and the attitude with which he approached his tasks enabled... | |
 | George Brown Goode - 1883 - 792 páginas
...original plans the Commissioner insisted that to study only the food-fishes would be of little importance, and that useful conclusions must needs rest upon a...of investigations purely scientific in character. The life history of species of economic value should be understood from beginning to end, but no less... | |
 | John Michels (Journalist) - 1918 - 684 páginas
...original plans the commissioner insisted that to etudy only food fishes would be of little importance, and that useful conclusions must needs rest upon a...of investigations purely scientific in character. The life history of species of economic value should be understood from beginning to end, but no less... | |
 | George Brown Goode - 1883 - 96 páginas
...original plans the Commissioner insisted that to study only the food-fishes would be of little importance, and that useful conclusions must needs rest upon a...of investigations purely scientific in character. The life history of species of economic value should be understood from beginning to ' end, but no... | |
 | United States. Bureau of Fisheries - 1883 - 1212 páginas
...original plans the Commissioner insisted that to study only the food-fishes would be of little importance, and that useful conclusions must needs rest upon a...of investigations purely scientific in character. The life-history of species of economic value should be understood from beginning to end, but no less... | |
 | 1883 - 550 páginas
...original plans the Commissioner insisted that to study only the food-fishes would be of little importance, and that useful conclusions must needs rest upon a...of investigations purely scientific in character. The life history of species of economic value should be understood from beginning to end, but no less... | |
 | Sir A. J. Adderley - 1883 - 66 páginas
...original plans the Commissioner insisted that to study only the food-fishes would be of little importance, and that useful conclusions must needs rest upon a...of investigations purely scientific in character. The life history of species of economic value should be understood from beginning to end, but no less... | |
 | United States National Museum - 1884 - 666 páginas
...original plans the Commissioner insisted that to study only the food-fishes would be of little importance, and that useful conclusions must needs rest upon a...of investigations purely scientific in character. The life history of species of economic value should be understood from beginning to end, but no less... | |
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