980 resultados para Agricultural engineering
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Mimeographed.
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Earlier ed. by Glenn Charles Cook.
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"April 15, 1969."
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"Contract FY 81-8/AE-8."
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Contribution from Bureau of Plant Industry, Soils, and Agricultural Engineering.
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Contribution from Bureau of Agricultural Engineering.
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Contribution from Bureau of agricultural engineering.
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"June 1938."
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Cover title.
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"For Spanish edition of this material see: ... [his] Fibras vegetales y su producción en América. Translated by María A. Ruisánchez Masters. Unión panamericana, Officina de cooperación agrícola Pub. agric. nos. 137-140"--Foot-notes, p. 1.
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Contribution from Bureau of Plant Industry, Soils and Agricultural Engineering.
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Cover title.
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"March 1948."
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Cover title.
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Contribution from Bureau of Plant Industry, Soils, and Agricultural Engineering.