TY  - BOOK
AU  - Donoven,George S., Gimmestad, Beverly Beyreuther
AU  - x
TI  - Trigonometry with calculators: x
SN  - x
U1  - 516.24/DOT 
PY  - 1980///
CY  - Boston
PB  - Prindle, Weber & Schidt
KW  - Trigonometry
KW  - Calculating Machines
N1  - x
ER  -