TY  - BOOK
AU  - SattarMuhammad Abdus .
AU  - 
AU  - Sattar.Muhammad Abdus .
TI  - A text book on  higher trigonometry
U1  - 516.24 22
PY  - 1989///
CY  - Bangladesh
PB  - Ali publications
KW  - Trigonometry
ER  -