一般注記Distributed to depository libraries in microfiche
Two illustrations on two folded sheets in pocket
Physical description for original version: iv, 42 p. : 28 cm
書誌注記Includes bibliographical references (p. 41-42)
原資料等に関する注記原資料の出版事項: Tallahassee, Fla. ; Denver, Colo. : Dept. of the Interior, U.S. Geological Survey : Books and Open-File Reports Section [distributor], 1987 [i.e. 1988]
SUPTDOC番号: I 19.42/4: 87-4080
GPO管理番号: 624-B (MF)