並列タイトル等50 years of research progress
一般注記Cover title
Distributed to depository libraries in microfiche
"May 1991."
Physical description for original version: 58 p. : 28 cm
書誌注記Includes bibliographical references (p. 50-57)
原資料等に関する注記原資料の出版事項: Portland, Or. (319 S.W. Pine Street, Portland 97208) : U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, [1991]
SUPTDOC番号: A 13.88: PNW-GTR-266
GPO管理番号: 83-B-06 (MF)