TY  - BOOK
AU  - Sattar , Sardar Abdus
TI  - A text book on higher trigonometry: [ for B. A. / B. Sc. (Pass, subsidiary and honours ) students ] 
U1  - 516.24 
PY  - 1987///
CY  - Dhaka
PB  - Ali pub.
KW  - Trigonometry
ER  -