TY  - BOOK
AU  - Correns,Carl W
AU  - Johns,William D
TI  - Introduction to mineralogy
U1  - 545 COR  
PY  - 1969///.
CY  - London : 
PB  - George Allen and Unwin, 
KW  - Crystallography
KW  - Mineralogy
N1  - ill.391 fig. 1 plate
ER  -