TY  - BOOK
AU  - Pough,Frederick H.
TI  - A field guide to rocks and minerals
T2  - The Peterson field guide series
SN  - 0395081068
AV  - QE367.2 .P68 1976
U1  - 549/.1 
PY  - 1976///
CY  - Boston
PB  - Houghton Mifflin
KW  - Mineralogy, Determinative
KW  - Rocks
N1  - Includes index; Bibliography: p. 303-305
ER  -