455 resultados para Fertilizer equipment.


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Prepared for U.S. Coast Guard, Office of Research and Development.

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"Contract No. AT(30-1)-1192."

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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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Mode of access: Internet.

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Typescript.

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On t.p.: Supplement to planning and equipping the homemaking department, Bulletin no. 20, Division of School Buildings and Grounds.

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"Catalog no. 160."