00752cam a22002291 4500 gs 32000025 DLC 20260227111336.0 780216s1931 xx 000 0 eng c gs 32000025 (OCoLC)3645435 Library, U.S. Geological Survey OT DLC premarc QE109 .L65 Logan, William Newton, 1869-1941. The sub-surface strata of Indiana, by William N. Logan, Division of geology. Fort Wayne, Fort Wayne printing co., 1931. 790 p. incl. illus., maps, tables. 23 cm. Indiana. Dept. of conservation. Publication no. 108 Bibliography: p. 15. Geology Indiana. 26932 26932