00270nam a2200109Ia 4500082002200000100003300022245004400055260003700099300001400136500000500150700000500155  a658.4034bM369.OM  aMarshall, Paul W. and Others  aOperations management; text and casesb  aIllinoisbRichard D. Irwinc1975  axii, 68p.  a  a