Physical description for original version: ii, 48 p. : 28 cm
書誌注記
Bibliography: p. 48
原資料等に関する注記
原資料の出版事項: Knoxville, Tenn. ; Norris, Tenn. : Tennessee Valley Authority, Office of Natural Resources and Economic Development, Division of Air and Water Rersources : Division of Services and Field Operations, [1986]