TY  - BOOK
T1  - Building mathematical competence in the elementary school
DA  - [1966]
CY  - New York,
AU  - Spencer, Peter Lincoln,
AU  - Brydegaard, Marguerite,
ET  - Rev. ed.
CN  - QA135 .S75 1966
CN  - QA135
PB  - Holt, Rinehart and Winston
PP  - New York,
PY  - [1966]
N1  - Published in 1952 under title: Building mathematical concepts in the elementary school.
ID  - 58138
KW  - Arithmetic
TI  - Building mathematical competence in the elementary school
ER  -