TY  - BOOK
AU  - Chugh; Om.P.,Gupta;G.C, and Gupta;R.K.
TI  - Text book of plane trignometry
U1  - 516.24 C7P 
PY  - 1981///
CY  - Delhi
PB  - Kautilya prakashan
KW  - Mathematics
ER  -