000			00331nam a22001337a 4500
082			_a604 _bSPE _cD.
100			_aSpencer, Henry Cecil.
245			_aTechnical drawing problems _cHenry Cecil Spencer.
250			_a9th ed.
260			_aNew York, _bMacmillan Publishing Company,
300			_av, 88 p.:
650			_aMCE
942			_cBK
999			_c4914 _d4914