Course Development. A Manual for Editors of Distance-Teaching Materials / Janet Jenkins. Jenkins, Janet. Commonwealth Secretariat, London (England). International Extension Coll., Cambridge (England). 371.3078 JEC Practitioners. ericd Microfiche. [Washington D.C.]: ERIC Clearinghouse microfiches : positive. Washington, D.C. : Distributed by ERIC Clearinghouse, 1985. 1985. 1985 Text 201 p. ; microfiches : positive. eng