ISBN 9781572326354 books & textbook
Comparing and Scaling: Ratio, Proportion, and Percent (Connected Mathematics)
Lappan, Glenda Fey, James T. Phillips, Elizabeth D. Anderson, Catherine
Dale Seymour Pubn /1997T Paperback / 87 Pages
isbn-10: 1572326352 / isbn-13: 9781572326354
