Leff, Lawrence S. Barron's regents exams and answers : math A / Lawrence S. Leff - New York : Barron's Educational Series, Inc., ©2006. - ix, 502 pages ; 17cm ISBN: 9780764115523 Subjects--Topical Terms: Mathematics--Study and teaching (Secondary). Dewey Class. No.: C 510.76 / L52b 2006