Seismic-refraction study of suspected drift-filled bedrock valleys in Ramsey County, Minnesota / by D.G. Woodward ; prepared in cooperation with the U.S. Environmental Protection Agency
Physical description for original version: iv, 20 p. : 28 cm
書誌注記
Bibliography: p. 20
原資料等に関する注記
原資料の出版事項: St. Paul, Minn. ; Denver, Colo. : U.S. Dept. of the Interior, Geological Survey : Open-File Services Section, Western Distribution Branch, 1985