TY  - BOOK
AU  - Swineford,Ada
ED  - National Conference on Clays and Clay Minerals
TI  - Clays and clay minerals: proceeding  
U1  - 553.6106173 
PY  - 1959///
CY  - New York
PB  - Pergmon Press
KW  - Clay
KW  - Clay minerals
KW  - Natural gas
ER  -