000 00278nam a2200121Ia 4500
008 220201s1959 xx 000 0 eng d
082 _a621.317
100 _aMurphy, Gordon J
245 0 _aControl engineering
260 _bD. Van norland
_c1959
300 _a385
942 _2ddc
999 _c75304
_d75304