1990 - Approaching Precalculus Mathematics Discretely Explorations in a Computer Environment (Hardcover) ISBN-13: 9780262121385 ISBN-10: 0262121387 Genre: Science & Math ? 1990 - Approaching Precalculus Mathematics Discretely Explorations in a Computer Environment [Exploring With Logo] (Paperback) ISBN-13: 9780262620635 ISBN-10: 0262620634 Genre: Computers & Technology ? |