Peregoy, Richard P. Some probable identifying characteristics of managerial obsolescence : [microform] / Richard P. Peregoy. - Ann Arbor, Mich. : University Microfilms International, 1979. - 2 microfiches ; 11 x 15 cm. Thesis (Ph.D.)-Pace University, 1978. Subjects--Topical Terms: Depreciation.