Kolby, Jeff. GRE math prep course / Jeff Kolby, Derrick Vaughn, Kunda Vamsidhar. - New ed. - New York : Nova Press, 2016. - 524 p. : ill. ; 24 cm. ISBN: 9788172344610 Subjects--Topical Terms: Mathematics--Examinations.Graduate Record Examinations Dewey Class. No.: 510.76 / KOG