United States text Washington, D.C.? U.S. Dept. of Agriculture Supt. of Docs., U.S. G.P.O., distributor] 1986 monographic vii, 336 p. : ill. ; 23 cm. Cover title. Shipping list no.: 86-919-P. Includes index. S/N 001-000-04472-9 Item 17 Agriculture Agriculture 630 s 630 AGR 1986 A049 Or.