TY - BOOK AU - Howard,V.A. ED - Harvard University. TI - Varieties of thinking: essays from Harvard's Philosophy of Education Research Center SN - 0415900859 : U1 - 370.152 PY - 1990/// CY - New York PB - Routledge KW - Thought and thinking KW - Study and teaching KW - Cognition in children N1 - Includes bibliographical references and index ER -