TY  - BOOK
AU  - Velde B
TI  - Clays and clay minerals in natural synthetic systems
T2  - Developments in sedimentology; 21
U1  - H23, L71 
PY  - 1977///
CY  - Amsterdam
PB  - Elsevier Scientific        
KW  -  Metamorphism
KW  - Geology
ER  -