TY  - BOOK
AU  - COHEN, Arjeh M
AU  - CUYPERS, Hans
TI  - Algebra interactive: Learning algebra in an exciting way
SN  - 3540653686
U1  - 512 
PY  - 1999///
CY  - NEW YORK
PB  - SPRINGER - VERLAG
KW  - ALGEBRA
ER  -