000 00237nam a2200073 4500
080 _a
_b
245 _aBS-0842 - 1939; Voltage-operated Earth-leakage Circuit-Breakers for use on Consumers' Premises
700 _aBritish Standards Institution
260 _aLondon
_bBSI
_c1939
300 _a25p
999 _c24586
_d24586