TY  - BOOK
AU  - Hornsby,John
AU  - Lial,Margaret L.
AU  - Rockswold,Gary K.
TI  - A graphical approach to precalculus with limits: a unit circle approach 
SN  - 9780321644732
AV  - QA331.3 .H81 2011
PY  - 2011///
CY  - Boston 
PB  - Addison Wesley
N1  - Includes index
ER  -