000 00263nam a2200085Ia 4500
008 180131b1980 xxu||||| |||| 00| 0 eng d
080 _a
_b
100 _aIndian Standards Institution
245 _aIs: 9500 - 1980; Specification For 360 Degree Rotary Emergency Warning Lights
260 _a
_bBIS
_c1980
999 _c47592
_d47592