TY  - BOOK
AU  - Grim, Ralph E.
TI  - Clay mineralogy
T2  - Mc Graw-Hill International Series in the Earth and Planetary Science
U1  - 549:551.311.234.5 K8 
PY  - 1968///
CY  - New York
PB  - Mc Graw-Hill
KW  - Ralph E. Grim
KW  - Mineralogy,Minerals, Clay
ER  -