Mahmud, Sultan.
A text book on higher trigonometry / Sultan Mahmud, Syed Quasim Hossain and Nalini Ranjan Ray. - 2nd rev. ed. - Dhaka, Bangladesh : East Bengal Pub., 1964. - xxii, 299 p. : ill. ; 21 cm.
For B A & B Sc. Pass and Honours Students.
Trigonometry.
516.24
A text book on higher trigonometry / Sultan Mahmud, Syed Quasim Hossain and Nalini Ranjan Ray. - 2nd rev. ed. - Dhaka, Bangladesh : East Bengal Pub., 1964. - xxii, 299 p. : ill. ; 21 cm.
For B A & B Sc. Pass and Honours Students.
Trigonometry.
516.24