ag, U. s. d. o. (1975). Soil: The yearbook of agriculturare 1957. United states department of agriculture.
Chicago Style (17th ed.) Citationag, United states department of. Soil: The Yearbook of Agriculturare 1957. United states department of agriculture, 1975.
MLA (8th ed.) Citationag, United states department of. Soil: The Yearbook of Agriculturare 1957. United states department of agriculture, 1975.
Warning: These citations may not always be 100% accurate.