000			003300000a22001450004500
245			_aAn introduction to servomechanisms
100			_aWestwater, F.L.
100			_aWaddell. W.A.
260			_aLondon _bE.U.P. _c1961
300			_a191 p.
500			_areprint on 1968
080			_a621-52 _bW4
041			_aEN
942			_cBK
999			_c94102 _d94102