991 resultados para Spraying and dusting in agriculture.
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This bibliography contains 151 selected references on the uses of radioactive and stable isotopes in animal husbandry and in studies of fertilizer uptake by plants, plant physiology, photosynthesis, and entomology. These references were selected from scientific journals published during the period 1957-1958. An author index is included.
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"August 1992."
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Mode of access: Internet.
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This annotated bibliography contains 148 selected references on the uses of radioactive and stable isotopes in animal husbandry and in studies of fertilizer uptake by plants, plant physiology, photosynthesis, and entomology. These references were selected from scientific journals published during the period 1957-1958. Subject and author indexes and a list of the periodicals from which the references were selected are included.
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"TID-3078(Suppl. 1). Biology and Medicine, TID-4500 (31st edition)."
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Mode of access: Internet.
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Map wanting.
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Mode of access: Internet.
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Issued in 1931 as Bulletin no. 6, U. S. Federal farm board.
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Typewritten.
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Includes indexes.
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I. General report.--II. Report of investigations.
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At head of title: U.S. Department of Agriculture.
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Includes bibliographies.
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Mode of access: Internet.