TY - GEN AU - Klausmeier,Herbert J. AU - Allen,Patricia S TI - Cognitive development of children and youth: a longitudinal study T2 - Educational psychology SN - 0124113559 PY - 1978/// CY - New York (etc.), London PB - Academic Press KW - Cognition in children N1 - Bibl.: p.301-313. - Index ER -