TY  - BOOK
T1  - Acquisition of mathematics concepts and processes /
DA  - 1983.
CY  - New York :
AU  - Lesh, Richard A.
CN  - QA135.5 .A27 1983
CN  - QA135.5
PB  - Academic Press,
PP  - New York :
PY  - 1983.
N1  - Companion vol. to: The Development of mathematical thinking.
ID  - 93603
KW  - Mathematics
KW  - Cognition in children.
SN  - 012444220X (alk. paper)
TI  - Acquisition of mathematics concepts and processes /
ER  -