Subsurface geologic methods : a symposium /
Edited by L. W. Leroy.
- 2nd Ed.
- Colorado : Colorado school of mines, c 1950.
- 1156 p. : ill. ; 24 cm.
Includes index.
319 319
Geology--Research.
551 / L562s
Includes index.
319 319
Geology--Research.
551 / L562s