TY  - BOOK
AU  - Penna,J.A
TI  - Graphing calculator manual 
SN  - 0201709422
AV  - QA20 .C3 P4 2001 
PY  - 2007///
CY  - Bopston
PB  - Addison Wesley
KW  - Graphic calculator-Handboks,manual,etc
KW  - Texas instruments programmable calculator
ER  -