TY  - BOOK
AU  - Favila, Raymundo A.
AU  - Doval Santos, Esther Z. 
TI  - Modern trigonometry : : from the function standpoint / 
SN  - 9710807811
U1  - FIL 516.24 F27m 1976 
PY  - 1976///
CY  - [S.l.]
PB  - National Bookstore, 
KW  - Trigonometry
N1  - Includes index
ER  -