00805nam0-22003011i-450-990003200880403321000320088FED01000320088(Aleph)000320088FED0100032008820000920d1962----km-y0itay50------baitaIT<<The >>sources of inventionJohn Jewkes, David Sawers, Richard Stillerman.rev. ed.LondonMacmillan1962.XII, 428 p.22 cmJewkes,JohnSawers,DavidStillerman,RichardITUNINARICAUNIMARCBK99000320088040332117420 JEW032335SESSESSources of invention453015UNINAING01