"Department of Geography, Southern Illinois University."
Distributed to depository libraries in microfiche
"April 1979."
Physical description for original version: iii, 117 p. : 28 cm
書誌注記
Bibliography: p. 111-117
原資料等に関する注記
原資料の出版事項: [Ft. Belvoir, Va.] ; Springfield, Va. : U.S. Army Corps of Engineers, Institute for Water Resources : National Technical Information Service [distributor, 1985]