一般注記Distributed to depository libraries in microfiche
"January 1991"--P. iii
Physical description for original version: v, 47 p. : 28 cm
書誌注記Includes bibliographical references (p. 23-24)
原資料等に関する注記原資料の出版事項: [Washington, DC] ; Rockville, MD : U.S. Dept. of Agriculture, Economic Research Service, Resources and Technology Division : ERS-NASS [distributor, 1991]
SUPTDOC番号: A 93.44: AGES 91-05
GPO管理番号: 42-W-1 (MF)