TY  - BOOK
AU  - Wells, David W
TI  - Growth in mathematics : Purple [level 5]
SN  - 0153512814
U1  - 513.1 
PY  - 1978///
CY  - New York
PB  - Harcourt Bracce Jovanovich
KW  - Arithmetic--Study and teaching (Secondary)
KW  - Arithmetic
N1  - Include Index
ER  -