000			003330000a22001450004500
245			_aPractical geometry and engineering graphics
100			_aAbbott, W.
250			_a8th ed.
260			_aLondon _bBlackie _c1971
300			_a349p. : ill.
020			_a216894506
080			_a621.7:744 _bA2
041			_aEN
942			_cBK
999			_c52839 _d52839