000 00257nam a2200097Ia 4500
008 230508s2007 xx 000 0 und d
041 _aeng
100 _aWEBB JOHN
245 _aPROGRAMMABLE LOGIC CONTROLLERS PRINCIPLES AND APP.
260 _bP H I
_c2007
_g2006
999 _c719082
_d719082