Report of the Annual Meeting of the South African Association for the Advancement of Science, Том 15South African Association for the Advancement of Science., 1919 |
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Стр. v
... tree ( Schinus molle ) in its relation to epidemic hay fever : Prof. G. POTTS , M.Sc. , Ph.D. 525 The engraved stone of Loë , Bechuanaland Protectorate : Miss M. WILMAN ( Plates 12-15 ) .. 531 Radium production 534 Ageing of chemical ...
... tree ( Schinus molle ) in its relation to epidemic hay fever : Prof. G. POTTS , M.Sc. , Ph.D. 525 The engraved stone of Loë , Bechuanaland Protectorate : Miss M. WILMAN ( Plates 12-15 ) .. 531 Radium production 534 Ageing of chemical ...
Стр. 13
... tree will of necessity be stunted . But surely , some may say , during a period of great national emergency , at all events , we cannot afford to spend on pure scientific research time and money which should be devoted to the objects of ...
... tree will of necessity be stunted . But surely , some may say , during a period of great national emergency , at all events , we cannot afford to spend on pure scientific research time and money which should be devoted to the objects of ...
Стр. 16
... trees . Of late we , too , have begun to show some concern about our wheat crops , and the two problems that faced us were how to make existing lands yield larger crops , and how to extend the present wheat area . These problems have ...
... trees . Of late we , too , have begun to show some concern about our wheat crops , and the two problems that faced us were how to make existing lands yield larger crops , and how to extend the present wheat area . These problems have ...
Стр. 81
... trees known as pines , spruces , and firs . It may be of interest to note that Sweden furnished practi- cally half our requirements , Norway about 1 / 5th , while the United States , Canada , and Russia were mainly responsible for the ...
... trees known as pines , spruces , and firs . It may be of interest to note that Sweden furnished practi- cally half our requirements , Norway about 1 / 5th , while the United States , Canada , and Russia were mainly responsible for the ...
Стр. 82
... trees , timber , and other forest produce . The Department's control over such undemarcated areas is much less complete than in the case of demarcated forests , and therefore when circumstances allow , and it is otherwise desirable ...
... trees , timber , and other forest produce . The Department's control over such undemarcated areas is much less complete than in the case of demarcated forests , and therefore when circumstances allow , and it is otherwise desirable ...
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Report of the Annual Meeting of the South African Association for the ..., Том 7 Полный просмотр - 1910 |
Report of the Annual Meeting of the South African Association for the ..., Том 6 Полный просмотр - 1910 |
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