TY  - BOOK
T1  - Plane trigonometry and tables,
DA  - c1951.
CY  - Boston,
AU  - Wentworth, George,
AU  - Smith, David Eugene,
CN  - QA533
CN  - QA533
PB  - Ginn
PP  - Boston,
PY  - c1951.
ID  - 65422
KW  - Plane trigonometry.
TI  - Plane trigonometry and tables,
ER  -