TY  - BOOK
AU  - FILLOY, Eugenio
AU  - PUIG, Luis
AU  - ROJANO, Teresa
TI  - Educational Algebra: a theoretical and empirical approach
SN  - 9780387712536
U1  - 512.007 
PY  - 2008///
CY  - England
PB  - Springer
KW  - Algebra -- Study and teaching
ER  -