Vinogradov, Ivan Matveevich, 1891- Elements of number theory/ translated from the 5th rev. ed. by Saul Kravetz. - [New York]: Dover, [1954]. - 227 p.; 21 cm. LCCN: 54003691 /L Subjects--Topical Terms: Number theory. Dewey Class. No.: 512.7 / V788e