000 00255nam a2200073 4500
080 _a
_b
245 _aBS-2538 - 1954; Air-cooled flamerproof single-phase lighting transformer units supplied from high voltage systems
700 _aBritish Standards Institution
260 _aLondon
_bBSI
_c1954
300 _a7p
999 _c24800
_d24800