1930. Buckhannan, W. H.(William Henry), 1901-cartographer. Shows soil types classification by colors and symbols.; Field Operations, Bureau of Chemistry and Soils.; Lith. A. Hoen & co., Inc. Scale 1:63,360.... The Bureau.
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1932. Higbee, Howard William,surveyor., Miller, J. T. (John T.),1906-cartographer,surveyor., and Waggoner, M. E. (Morris Edward),surveyor. Shows soil types classification by colors and symbols. 'Field Operations, Bureau of Chemistry and Soils.' 'Litho Eastern Offset Inc., Balto.' Scale... The Bureau.
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