TY  - BOOK
AU  - Ayres JrkFrank, x
AU  - x
TI  - Schaum's outline of theory and problems of plane and spherical trigonometry: x
SN  - x
U1  - 514/AYS 
PY  - 1954///
CY  - N.Y.
PB  - McGraw - Hill
KW  - Trigonometry
N1  - x
ER  -