138,000-volt high-pressure oil-filled ca
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R.H.O.
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Article
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1948
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Elsevier Science
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English
โ 72 KB
plants were made vulnerable just as a man with scratches on his hands is vulnerable to many disease organisms, such as tularemia of rabbits and man. Experimenters using a chemical that kills nematodes have increased yields of fiber greatly by ridding the cotton plants of the pests that assist tile