000 00328nam a2200121 4500
027 _aBS 1968 : 1953
_q1953
041 _aeng
942 _cSD
110 _aBritish Standard Institution, London
245 _aBS 1968 : 1953 : Floats for ballvalves ( Copper )
260 _aLondon
_bBritish Standard Institution
500 _aSTD582
999 _c172628
_d172628