Shahidullah, A.M.M. A textbook on higher algebra and trigonometry / A.M.M. Shahidullah, P.K. Bhattacharjee . - Dhaka: Omega, 1985 - 320, 127 p. 23 cm. Includes index. Subjects--Topical Terms: Algebra.; Mathematics. Dewey Class. No.: 512 / SHT