TY  - BOOK
AU  - Heritage,Raymond S
TI  - Learning mathematics: book two  
T2  - The Shropshire mathematics experiment
U1  - 510.7 19
PY  - 1965///
CY  - Middlesex
PB  - Penguin Books Ltd.
KW  - Mathematics
KW  - Spines
KW  - Learning
N1  - math
N2  - Mathematics and Statistics
ER  -