TY  - BOOK
AU  - National conference on clays and clay minerals(8th: 1959, Oc
TI  - Clays and clay minerals
PY  - 1960///
CY  - Pergamon
PB  - New York
UR  - http://14.139.222.13:80/cgi-bin/koha/opac-detail.pl?biblionumber=3415
ER  -