TY  - BOOK
AU  - Bittinger,Marvin L.
TI  - Algebra and trigonometry: graphs and models 
SN  - 0321279115
PY  - 2006///
CY  - Boston
PB  - Addison-Wesley
KW  - Algebra
KW  - Graphic methods
KW  - Trigonometry
ER  -