Modern trigonometry : from the functions stand-point.
Favila, Raymundo A.
Modern trigonometry : from the functions stand-point. - Manila : National Book Store, c1976.
Trigonometry.
F QA 531 F32 1976
Modern trigonometry : from the functions stand-point. - Manila : National Book Store, c1976.
Trigonometry.
F QA 531 F32 1976