Corn growing practices, 1965 - Smith, Helen Virginia, 1907-; Doescher, Carl O. (Washington] Economic Research Service, U.S. Dept. of Agriculture; [for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1968)
Bibliographical footnotes.
Keywords: Corn -- United States -- Statistics; Maize -- Statistics; Maize -- United States