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- The National Cooperative Soil Survey of the United States
- Document describes the origins and history of the Soil Survey with an emphasis on the time periods of 1899-1912, 1912-1920, 1920-1933, and 1933-1952. "For each of the four chronological periods, a brief introductory chapter describes the general political and administrative environment then prevailing, and a summary of the progress of the Soil Survey achieved under such an environment." (p. 36) Also provides information on early soil sampling, typing, mapping, and interpretation. Also tells about the coordination of the National Cooperative Soil Survey and developments in the National Cooperative Soil Survey from 1952-1957.