000 00249nam a2200073 4500
080 _a
_b
245 _aIS:4012 - 1967 (with Amendment No.1 - 1971) : Specification for Dust-Proof Electric Lighting Fittings
700 _aINDIAN STANDARDS INSTITUTION
260 _aNew Delhi
_bBIS
_c1967
300 _a22p+3p
999 _c26624
_d26624