TY  - BOOK
AU  - Brueckner, Leo J
AU  - Reckzeh, John
TI  - Developing mathematical understandings
U1  - 510.07 
PY  - 1957///
CY  - Philadelphia
PB  - The John C Winston
KW  - Algebra
KW  - Geometry, Informal
KW  - Mathematics
ER  -