TY  - BOOK
AU  - Velde,B.
TI  - Introduction to clay minerals : Chemistry, origins, usea and environmental significance
SN  - 0412370301
AV  - QE471.3 V46 I5 1992
PY  - 1992///
CY  - London
PB  - Chapman and Hall
KW  - Clay
KW  - Analysia
KW  - Clay minerals
ER  -