TY  - BOOK
AU  - Sparks, Fred Winchell
AU  - Rees, Paul K.
TI  - PLAIN TRIGONOMETRY
U1  - 514.5 
PY  - 1971///
CY  - Englewood-Cliffs, N. J.
PB  - Prentice-Hall
KW  - Trigonometry, Plane
ER  -