000 00239nam a2200073 4500
080 _a
_b
245 _aIS:12729 - 1988; Switchgear and Contrilgear for Voltages Exceeding 1000 V - General Requirements
700 _aBureau of Indian Standards
260 _aNew Delhi
_bBIS
_c1991
300 _a22p
999 _c36038
_d36038