TY - BOOK AU - Bucher, Charles Augustus, AU - Joel, Helmuth W.,;Joel, Gertrude A., ED - ED - ED - ED - SN - 2 PY - 1968///.;copyright 1967.46 CY - [New York] PB - Barnes and Noble KW - KW - 2 KW - 0 KW - 6 KW - 20 KW - Child development.;Parent and child N1 - Includes bibliographical references; 5 ER -