TY  - GEN
AU  - Larson,Ron
AU  - Hostetler,Robert P.
AU  - Heyd,David E.
TI  - Trigonometry 
SN  - 0669417378
U1  - 516.242 
PY  - 1997///
CY  - Boston
PB  - Houghton Mifflin
KW  - Trigonometry
N1  - Includes indexes
ER  -