921 resultados para Fertilizer equipment.


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"January 1981"--Cover.

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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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"Instruments."

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Federal Highway Administration, Washington, D.C.

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Federal Railroad Administration, Office of Safety, Washington, D.C.

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At head of title: Technology utilization.