TY  - BOOK
AU  - Sattar,Muhammad Abdus, x
AU  - x
TI  - Higher trigonometry: x
SN  - x
U1  - 516.2/S253h 
PY  - 1989///
CY  - Dhaka
PB  - Ali Pub
KW  - Trigonometry
N1  - x
ER  -