000 00345nam a2200121Ia 4500
008 220201s1968 xx 000 0 eng d
082 _a621.313
_bISI
100 _aIndian Standard Institute
245 0 _aIS:4691 degree of protection provided by enclosures for retaing electrical machinery
260 _bISI
_c1968
300 _a21
942 _2ddc
999 _c74693
_d74693