Gobran, Alfonse Intermediate algebra / Alfonse Gobran - Fourth Edition - Boston : PWS-KENT Pub. Co., ©1988. - xiv, 540, 148 pages : illustrations ; 24 cm Includes index. ISBN: 0-534-92061-6 Subjects--Topical Terms: Algebra Dewey Class. No.: DC 512.9 / G54