TY  - BOOK
AU  - Logan,William Newton
TI  - The sub-surface strata of Indiana,
T2  - Indiana. Dept. of conservation. Publication
AV  - QE109 .L65
PY  - 1931///
CY  - Fort Wayne
PB  - Fort Wayne printing co.
KW  - Geology
KW  - Indiana
N1  - Bibliography: p. 15
ER  -