TY - BOOK AU - SPIE Proceedings; Vol. 121 ED - Optics in adverse environments: proceedings of the Society of Photo-Optical Instrumentation Engineers TI - Optics in adverse environments: proceedings of the Society of Photo-Optical Instrumentation Engineers PY - 1975/// CY - SPIE PB - California UR - http://14.139.222.13:80/cgi-bin/koha/opac-detail.pl?biblionumber=7144 ER -