00307nam a2200109Ia 450000500170000000800410001708200120005810000200007024500560009026000430014630000080018920260224041000.0260224s9999||||xx |||||||||||||| ||und||  a670 CAM  aCampbell, J.S.  0aPrinciples of manufacturing materials and processes  aNew York: Mc-Graw-Hill Book Co, c1961  a674