The sub-surface strata of Indiana,
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.
gs 32000025
Geology--Indiana.
QE109 / .L65
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.
gs 32000025
Geology--Indiana.
QE109 / .L65