一般注記Distributed to depository libraries in microfiche
"December 1990"--P. iii
Physical description for original version: vi, 30 p. ; 28 cm
書誌注記Includes bibliographical references
原資料等に関する注記原資料の出版事項: [Washington, D.C.] ; Rockville, MD : U.S. Dept. of Agriculture, Economic Research Service, Agriculture and Rural Economy Division : ERS-NASS [distributor, 1990]
SUPTDOC番号: A 93.44: AGES 90-72
GPO管理番号: 42-W-1 (MF)