Jamison, Dean T. Cost factors in planning educational technology systems Dean T. Jamison - Paris UNESCO 1977 - 62p. : ill, 21cm. - Fundamentals of Educational Planning; 24 . Includes references ISBN: 9280310763 Subjects--Topical Terms: Educational technology LC Class. No.: EAF PAM LB5.F85[LB1028.3]No.24