TY  - BOOK
AU  - Ballou,Donald H., Steen, Frederick H.
AU  - x
TI  - Plane trigonomety with tables: x
SN  - x
U1  - 514.5/BAP 
PY  - 1943///
CY  - Boston
PB  - Ginn
KW  - Trigonometry
KW  - Logarithms
N1  - x
ER  -