000 00368nam a2200121 4500
027 _aBS 1761 : 1951
_q1951
041 _aeng
942 _cSD
110 _aBritish Standard Institution, London
245 _aBS 1761 : 1951 : Single bucket excavators of the crawler - mounted friction - driven type
260 _aLondon
_bBritish Standard Institution
500 _aSTD489
999 _c172511
_d172511