United States text Washington, D.C.] U.S. Dept. of Agriculture For sale by the Supt. of Docs., U.S. G.P.O. [1993] monographic xix, 437 p. : ill. (some col.) ; 24 cm. by Soil Survey Division staff. "This is a revision and enlargement of U.S. Department of Agriculture Handbook No. 18, the Soil survey manual, issued October 1962, and supersedes it." 0 0 0 631_470000000000000_SOI MCE Soil surveys Handbooks, manuals, etc 631.47 SOI