TY  - BOOK
AU  - Simpson Brian
TI  - Rocks and minerals
T2  - Commonwealth And International Library, Geology Division
U1  - H1, K6 
PY  - 1966///
CY  - Oxford
PB  - Pergamon Press         
KW  - Geology
N1  - Bib p. 259; Appendix p. 260-93
ER  -