TY  - BOOK
AU  - Mertens, Ruth
TI  - Investigating numbers and shape
SN  - 1-85270-022-X
AV  - TR(GS 372.7 M46 1987
PY  - 1987///
CY  - London
PB  - Octopus Pub. Group, Inc
KW  - Number concept
KW  - Size and shape
KW  - Education -- Parent participation
KW  - Home and school
N1  - Ages 7-8
ER  -