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Hearing before the committeeon science and technology U.S. house of representatives ninety-seventh congress

U.S. Government Printing Office 1981 . 321 p. 24 cm.

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Hearing and markup before the Subcommittee on Human rights and international organizations of the Committee on Foreigh Affairouse of Representatives ninety-seventh congress

U. S. Government Printing Office 1981 . 79 p. 24 cm.

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Soil survey manual...

By by Soil Survey Staff, Bureau of Plant Industry, Soils and agricultural engineering.... U.S. Government printing office 1951 . VII,503 p. , U.S. Department of agriculture. Agriculture handbook. No. 18, August 1951. Revision... of US Department of Agriculture Miscellaneous publication 274, the Soil survey manual,... September 1937, and supersedes it 25 cm.

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