000			003140000a22001330004500
245			_aSets,relations,foundations : an introduction
100			_aSelby, Samuel
100			_aLeonard, Sweet
260			_aNew York _bMcGraw Hill _c1963
300			_a233 p.
080			_a519.5 _bS4
041			_aEN
942			_cBK
999			_c51629 _d51629