000 00347nam a2200121 4500
027 _aBS 1790 : 1961
_q1961
041 _aeng
942 _cSD
110 _aBritish Standard Institution, London
245 _aBS 1790 : 1961 : Specification for length bars and their accessories
260 _aLondon
_bBritish Standard Institution
500 _aSTD498
999 _c172519
_d172519