TY  - BOOK
AU  - National Conference on Clays and Clay Minerals(10th: 1961, O
TI  - Clays and clay minerals
PY  - 1963///
CY  - Pergamon
PB  - Oxford
UR  - http://14.139.222.13:80/cgi-bin/koha/opac-detail.pl?biblionumber=3885
ER  -