TY  - BOOK
ED  - U S Work Project Administration. Mathematical Tables Project
TI  - Tables of circular and hyperbolic tangents and cotangents for radian arguments sponsored by National Bureau of Standards
U1  - 510.212 
PY  - 1943///
CY  - N Y
PB  - Columbia University Press
KW  - Hyperbolic tangents
KW  - Mathematics-tables
ER  -