000 00245nam a2200073 4500
080 _a
_b
245 _aBS: 162 - 1961; Specification for electric power switchgear and associated apparatus
700 _aBritish Standards Institution
260 _aLondon
_bBSI
_c1961
300 _a68+6 figures & charts
999 _c24290
_d24290