TY - BOOK AU - Manning, Duane. AU - ED - ED - ED - ED - SN - 2 PY - 1971///46 CY - New York PB - Harper & Row KW - KW - 2 KW - 0 KW - 6 KW - 20 KW - Curricula KW - Education N1 - Includes bibliographical references; 5 ER -