Science, Том 72John Michels (Journalist) American Association for the Advancement of Science, 1883 Since Jan. 1901 the official proceedings and most of the papers of the American Association for the Advancement of Science have been included in Science. |
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Стр. 353
... diseases ; the heartrot and portance in our forest areas . This distinction , although based mainly upon the relative value and accessibility of the tree attacked and upon the amount of damage produced by the disease agency , is pri ...
... diseases ; the heartrot and portance in our forest areas . This distinction , although based mainly upon the relative value and accessibility of the tree attacked and upon the amount of damage produced by the disease agency , is pri ...
Стр. 355
... disease control over large areas of timber . The control of disease in a field , an orchard or in a woodlot is difficult enough , but when a heavily timbered area of several thousand acres , spread over very rough terrain , is ...
... disease control over large areas of timber . The control of disease in a field , an orchard or in a woodlot is difficult enough , but when a heavily timbered area of several thousand acres , spread over very rough terrain , is ...
Стр. 566
... disease known as Texas fever was the cause of the disease and that the cattle tick is the means whereby this disease is transmitted . This was the first demonstration that a microbial disease could be transmitted through the ...
... disease known as Texas fever was the cause of the disease and that the cattle tick is the means whereby this disease is transmitted . This was the first demonstration that a microbial disease could be transmitted through the ...
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B Mosquito Vectors of Experimental Yellow | 1 |
Polar Exploration I BowMAN 439 | 13 |
Sudan III Behavior of E H MACARTHUR | 14 |
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