TY  - BOOK
AU  - Penna, Judith A.
TI  - Graphing calculator manual : algebra and trigonometry, graphs & models and precalculus; graphs & models
SN  - 9780321531988
AV  - QA 20.C34 P466/ 
CY  - Boston
KW  - Algebra. Algebra_Graphic methods. Trigonometry. Graphic calculators
ER  -