TY  - BOOK
AU  - Ludman, Allan.
AU  - Marshak, Stephen.
TI  - Laboratory manual for introductory geology
SN  - 9780393913286
AV  - GE28 .L912
PY  - 2012///
CY  - New York
PB  - W. W. Norton and company
KW  - Geology-study and teaching
ER  -