Richmond P. E. New trends in integrate science teaching Vol. II . Ed. by P. E.Richmond . Richmond P. E. - Paris Unesco France 1973 - 239P. cm. - Integrated science. . ISBN: 9231011146 Standard No.: 27545 Source: Textual Subjects--Topical Terms: EDUCATION Dewey Class. No.: T:3:A, L3. 2