Peters, David A. Principles of supervision / David A. Peters; this is a National Extension College course prepared in collaboration with the Institute of Supervisory Management. - London : Longmans , 1967. - ix, 85 p. : 22 cm. - Longmans' supervisory series 1 . Bibliography: p. 81. LCCN: 68118018 Subjects--Topical Terms: Supervision of employees. LC Class. No.: HF5549 / .P4529 Dewey Class. No.: 658.302 / PEP 1967