ISBN 0131985809 books & textbook
Precalculus: Graphical, Numerical, Algebraic 7E Student Practice Workbook
Demana, Franklin D. Waits, Bert K. Foley, Gregory D. Kennedy, Daniel
Prentice Hall /2006T Paperback / 1056 Pages
isbn-10: 0131985809 / isbn-13: 9780131985803
