TY  - BOOK
AU  - Ballou,Donald H.
AU  - Steen,Frederick Henry
TI  - Plane trigonometry: with tables
AV  - QA533 .B2 1943
PY  - 1943///
CY  - Boston
PB  - Ginn
KW  - Trigonometry, Plane
KW  - Local
N1  - "Wentworth-Smith trigonometric and logarithmic tables" on card laid in; Preliminary editions lithoprinted at Ann Arbor, 1940 and 1941; "Answers" : 6 [1] p. following p. 123
ER  -