TY - BOOK AU - Zarzycki, J and Naudin, F TI - On the interpretation of the infra-red absorption spectra of vitreous SiO2, GeO2 and FeF2, and of the glasses SiO2- X2O, PY - 1960/// UR - http://14.139.222.13:80/cgi-bin/koha/opac-detail.pl?biblionumber=3366 ER -