TY  - BOOK
AU  - Chattopadhyay
TI  - Plane trigonometry
SN  - 9788121909181
U1  - 514.5 LON 
PY  - 1928///
CY  - New Delhi
PB  - S. Chand & Co
KW  - Trigonometry
N1  - Includes index
ER  -