United States. Soil Conservation Service. (1937). The Nichols Terrace: An improved channel--type terrace for the Southeast. [s.n.].
Chicago Style (17th ed.) CitationUnited States. Soil Conservation Service. The Nichols Terrace: An Improved Channel--type Terrace for the Southeast. [Washington]: [s.n.], 1937.
MLA (9th ed.) CitationUnited States. Soil Conservation Service. The Nichols Terrace: An Improved Channel--type Terrace for the Southeast. [s.n.], 1937.
Warning: These citations may not always be 100% accurate.