Sultan Mahmud.
Plane trigonometry / Sultan Mahmud. - 2nd rev ed. - Dhaka : East bengal Publishers, 1963. - xii, 318 p. : ill. ; 18 cm.
341 341
Trigonometry.
514.5 / S59p
Plane trigonometry / Sultan Mahmud. - 2nd rev ed. - Dhaka : East bengal Publishers, 1963. - xii, 318 p. : ill. ; 18 cm.
341 341
Trigonometry.
514.5 / S59p