TY  - BOOK
AU  - KHANNA, M.L
TI  - Trigonometry: Trigonometry._7th Ed, Meerut : Jai Prakash Nath, 1966
U1  - 514 
PY  - 1966///
CY  - Meerut
PB  - Jai Prakash Nath
ER  -