TY  - BOOK
AU  - WAHLSTROM, ERNEST E
TI  - PETROGRAPHIC MINERALOGY
PY  - 1955///
CY  - NEWYORK
PB  - JOHN WILEY AND SONS
UR  - http://krc.immt.res.in:80/cgi-bin/koha/opac-detail.pl?biblionumber=81
ER  -