00504nam a2200157 a 4500 696 696 870617s1987 enka b 00110 eng 0709941625 : 18.95 LB1590.3 .L36 1987 Langford, Peter. 374 Concept development in the primary school / Peter E. Langford. / London : Croom Helm, 1987 133 p. : ill. Thought and thinking Study and teaching. 375 Cognition in children. 376 GBE lcc 0 0 0 LB15903 L36 01987 0 CGB 1047 SP SP GEN 2018-03-12 0.00 LB1590.3 .L36 1987 1000013985 2018-03-12 00:00:00 1 2018-03-12 GBE