00872nam0-22003011i-450-990003171630403321000317163FED01000317163(Aleph)000317163FED0100031716320000920d1962----km-y0itay50------baitaITPsychological Principles in System DevelopmentEdited by Robert M. GagnéForeword by Arthur W. Melton.New YorkHoltRinehart & Winston\c\\1962.XIV, 560 p.24 cm1133012110Gagné,Robert M.Melton,Arthur W.ITUNINARICAUNIMARCBK99000317163040332111330 GAG022784SESSESPsychological Principles in System Development457780UNINAING01