30 resultados para P-GROUPS


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Shipping list no.: 91-078-P.

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Contribution from Bureau of Chemistry and Soils.

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Photocopy. [Washington] : Clearinghouse for Federal Scientific and Technical Information, l970. Each page of the photocopy (most in double columns) represents approximately 2 pages of the original. [167] p. ; 22 x 28 cm.

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Thesis (PH. D.)-Columbia university.

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Bibliography: p. 98.

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Bibliography: p. 272-279.

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"OTA-TM-H-17"--P. [4] of cover.