KASKEL, ALBERT PRINCIPLES OF SCIENCE: ACTIVITY CENTERED PROGRAM: TEACHER'S GUIDE, BOOK 1 - SECOND EDITION - OHIO, USA CHARLES E. MERRIL. PUBLISHING CO. 1983 - 210P. - PRINCIPLES OF SCIENCE . ISBN: 0675077370 Subjects--Topical Terms: SCIENCETEACHER'S EDITIONACTIVITY-CENTERED PROGRAM Dewey Class. No.: TR 500.076/KAS