A study of the soils of the United States / by George Nelson Coffey.

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Main Author: Coffey, George N. (George Nelson), 1875-1967
Corporate Authors: United States. Department of Agriculture, United States. Bureau of Soils
Format: Government Document Book
Language:English
Published: Washington : Govt. Print. Off, 1912.
Series:Bulletin (United States. Bureau of Soils) ; no. 85.
Subjects: