TY  - BOOK
AU  - National Conference on Clays and Clay Minerals(13th: 1964, O
TI  - Clays and clay minerals
PY  - 1966///
CY  - Pergamon
PB  - Oxford
UR  - http://14.139.222.13:80/cgi-bin/koha/opac-detail.pl?biblionumber=4540
ER  -