TY  - BOOK
AU  - Verma, Ajit Ram
TI  - Polymorphism and polytypism in crystals
PY  - 1966///
CY  - John Wiley & Sons, Inc.
PB  - New York
UR  - http://14.139.222.13:80/cgi-bin/koha/opac-detail.pl?biblionumber=4368
ER  -