000 00563cam a22002291 4500
100 _aJewkes, John ,1902-
041 _aeng
245 _aThe sources of invention
260 _bMacmillan
260 _aLondon
260 _c1958
260 _c1958
270 _dGB
300 _a428 p. ; 23 cm.
245 _cby John Jewkes , David Sawers [and] Richard Stillerman
500 _aIncludes bibliography
650 0 _aInventions
650 0 _xT
050 _aT212.J4 1958
942 _cPRINT
999 _c180437
_d180438
970 _a51
_bMohamad Barham
_c51
_dMohamad Barham