TY  - BOOK
AU  - Webber,G.Cuthbert
AU  - Brown,John Arthur
TI  - Basic concepts of mathematics,
T2  - Addison-Wesley science and mathematics education series
AV  - QA248.3 .W4
U1  - 511 
PY  - 1963///]
CY  - Reading, Mass.
PB  - Addison-Wesley Pub. Co.
KW  - Arithmetic
KW  - Foundations
ER  -