The Physical Basis of SocietyD.Appleton, 1928 - 526 من الصفحات |
من داخل الكتاب
النتائج 1-5 من 41
الصفحة xi
... Crop Damage by Insects Methods of Attack on Enemy Insects 120 122 122 123 124 126 127 128 129 129 130 131 132 133 Birds and Man 133 Bird Census of the United States 134 Birds as Seed - Eaters 135 Birds as Grain - Eaters 136 Birds as ...
... Crop Damage by Insects Methods of Attack on Enemy Insects 120 122 122 123 124 126 127 128 129 129 130 131 132 133 Birds and Man 133 Bird Census of the United States 134 Birds as Seed - Eaters 135 Birds as Grain - Eaters 136 Birds as ...
الصفحة xxi
... crops 9. Utilization of the land area of the United States 248 249 10. Potential uses of land area of the United States 251 II . Average yields per acre , 1909-1913 , of seven important crops in four European countries expressed in ...
... crops 9. Utilization of the land area of the United States 248 249 10. Potential uses of land area of the United States 251 II . Average yields per acre , 1909-1913 , of seven important crops in four European countries expressed in ...
الصفحة 25
... crops is now recognized and most of the soils of the country have been carefully studied as well as named . In as much as the geologist measures time by eras rather than by years this appears to be the most logical place for the table ...
... crops is now recognized and most of the soils of the country have been carefully studied as well as named . In as much as the geologist measures time by eras rather than by years this appears to be the most logical place for the table ...
الصفحة 44
... crops . Another result is that the west coasts of America , as well as of Europe and Asia , taken as a whole , are much warmer and subject to fewer extremes than the east coasts . This is shown by the following comparison : Temperature ...
... crops . Another result is that the west coasts of America , as well as of Europe and Asia , taken as a whole , are much warmer and subject to fewer extremes than the east coasts . This is shown by the following comparison : Temperature ...
الصفحة 47
... crops ; if the rains are light , the water may evaporate ere the crops are benefited ; if very heavy they may beat down and destroy the crops and wash the LIFE , ITS NATURE AND DISTRIBUTION 47 Influence of Rainfall.
... crops ; if the rains are light , the water may evaporate ere the crops are benefited ; if very heavy they may beat down and destroy the crops and wash the LIFE , ITS NATURE AND DISTRIBUTION 47 Influence of Rainfall.
طبعات أخرى - عرض جميع المقتطفات
عبارات ومصطلحات مألوفة
acres Africa America appears areas Asia atoms average bacteria believe birds body carbon carbon dioxide cause cent century cephalic index changes characters chromosomes civilization climate color common copper crops cultivated culture danger Darwin death rate destroy disease domestic early earth eggs environment Europe European evidence fact feeble-minded females fish forms germ cells given heredity human Ibid important increase Indians individual inheritance insane insects iron killed known land later light living male man's marriage metals miles natural selection nature Negro neolithic organisms ovum oxygen Pará rubber tree parasites physical population possible pounds present problems produced R. S. LULL race seeds seems social South South America species square mile supply T. H. MORGAN temperature things thousand tion to-day trees tropics types United wild woman women