TY  - BOOK
AU  - Bell,Clifford
AU  - Thomas,Tracy Yerkes
TI  - Essentials of plane and spherical trigonometry
U1  - 514 23
PY  - 1943///
CY  - New York
PB  - H. Holt and company
KW  - Trigonometry
N1  - Includes Index
ER  -