TY - BOOK AU - Jamison,Dean TI - Cost factors in planning educational technology systems T2 - Fundamentals of educational planning 24 SN - 9280310763 PY - 1977/// CY - Paris PB - Unesco KW - Educational technology KW - Education KW - Costs N1 - Based in part on the author's Cost analysis for educational planning and evaluation, 1977; Bibliography: p. 59-62 ER -