Newcomb, Robert Developing effective supervisory newsletters: a guide to letter communications/ Robert Newcomb and Marg sammons - New York: American Management Association, 1956 - 90 p.; 22 cm. ISBN: $ 3.75 Subjects--Topical Terms: Supervisors--Case studiesPersonnel management--Case studiesOrganizational effectiveness--Case studies Dewey Class. No.: 658.3