TY  - BOOK
AU  - Sinha,K.C.
AU  - Sinha,U.C.
TI  - A textbook of trignometry: intermediate and engineering competitions 
U1  - 516.24 
PY  - 2002///
CY  - Patna
PB  - Students Friends
KW  - Trigonometry
KW  - Textbooks
ER  -