TY  - BOOK
AU  - Watson, Janet,
TI  - Rocks and minerals
T2  - Introducing geology series ; no. 4
SN  - 0045510318 (pbk.)
U1  - P 553 W38 
PY  - 1979///
CY  - London, Boston
PB  - Allen and Unwin
KW  - Rocks
KW  - Mineralogy
N1  - Includes index
ER  -