Chowdhury, Fatema Essentials of number theory / Fatema Chowdhury and Munibur Rahman Chowdhury - Dhaka : Pi Publications, c2005. - 224 p. : ill. ; 24 cm. Includes bibliographies and index. ISBN: 9843228367 Subjects--Topical Terms: Number theory LC Class. No.: QA241 / .C46 2005