Text ( visual ) : unmediated Adaptive education : individual diversity and learning / Robert Glaser. -- New York : Holt, Rinehart and Winston , c1977. -- vii, 181 p. ; 21 cm. -- (Principles of educational psychology series). -- Bibliography: p. [167]-174 ; Includes index. -- ISBN 0030152917 ; (BA12441153) ; https://ci.nii.ac.jp/ncid/BA12441153 Author Heading(s): Glaser, Robert. -- Classification(s): LCC : LB1031 ; DC : 371.39/4. -- Subject Heading(s): LCSH : Individualized instruction ; LCSH : School environment