Pollack, Paul 1980- Not always buried deep: a second course in elementary number theory/ Paul Pollack. - Providence, R.I.: American Mathematical Society, c2009. - xv, 303 p.: ill.; 27 cm. Includes bibliographical references and index. ISBN: 9780821848807 (alk. paper) 0821848801 (alk. paper) LCCN: 2009023766 Subjects--Topical Terms: Number theory. Dewey Class. No.: 512.72 / P771n