000 002810000a22001210004500
245 _aThe mechanical : progress of profession
100 _aRolt, L.T.C.
260 _aLondon
_bHeinemann
_c1967
300 _a163 p., ill.
080 _a621(091)
_bR6
041 _aEN
942 _cBK
999 _c93967
_d93967