TY  - BOOK
AU  - Heath,R.S.
ED  - Asutosh Collection (National Library, India)
TI  - A text book of elementary trigonometry
U1  - 514 
PY  - 1913///
CY  - Oxford
PB  - Clarendon Press
KW  - Trigonometry
N1  - Library has 3 cops
ER  -