一般注記Distributed to depository libraries in microfiche
"April 1991"--P. [iii]
Physical description for original version: iv, 33 p. : 28 cm
書誌注記Includes bibliographical references (p. 31-33)
原資料等に関する注記原資料の出版事項: [Washington, DC] (1301 New York Ave., NW, Washington 20005-4788) : U.S. Dept. of Agriculture, Economic Research Service, Agriculture and Rural Economy Division, [1991]
SUPTDOC番号: A 93.44: AGES 91-16
GPO管理番号: 42-W-1 (MF)