000 002690000a22001210004500
245 _aA social history of engineering
100 _aArmytage, W.H.G.
250 _a3d ed.
260 _aLondon
_bF.Muller
_c1971
080 _a62(091)
_bA7
041 _aEN
942 _cBK
999 _c93782
_d93782