000			00311nam a2200133Ia 4500
008			211209s1960 xx 000 0 und d
041			_aeng
082			_a621.8 N60 VIR
100			_aVIRGIL M F
245			_aMECHANISM
250			_a5 ed.
260			_aNEW YORK _bMEGRAW-HILL BOOK COMPANY _c1960
300			_a294
999			_c17211 _d17211