00558nam a2200169Ia 4500003000900000008004100009040001600050080002200066110003300088245012400121260005000245300000900295500001900304650002600323650001800349650002100367IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a083.7:535.81bISI  aIndian Standards Institution 0aIndian standard procedure for basic climatic and durability tests for optical instrumentscIndian Standards Institution  aNew DelhibIndian Standards Institutionc1963  a28p.  aIS 2352 : 1963  a Optical Instruments  a Standards   aNASA Thesaurus