000 00297nam a2200109Ia 4500
008 220201s1966 xx 000 0 eng d
100 _aI.S.I
245 0 _aIS 2268-1966 Specification for electric call bells & buzzers for windows use
260 _bI.S Insitute
_c1966
300 _a10
942 _2ddc
999 _c78692
_d78692