TY  - BOOK
AU  - Bell,Clifford, Thomas, Tracy Y.
AU  - x
TI  - Essentials of plane and sphericl trigonometry: x
SN  - x
U1  - 514.5/BEE 
PY  - 1946///
CY  - N.Y.
PB  - Holt
KW  - Trigonometry
N1  - x
ER  -