Sandison, Paul C. The key to a new educational strategy : the essential pedagogical features of the viable educational system / Paul C. Sandison. - Sandton, South Africa : Shadow Advertising & Marketing, c1994. - 257 p. : ill. (some col.) ; 24 cm. Includes index. Includes bibliographical references. ISBN: 0620186860 (pbk.) Subjects--Topical Terms: Education--Philosophy.Educational change.