TY  - BOOK
AU  - Ayres Frank J R
ED  - 
TI  - Theory and Peoblems of Trigonometry: with calculator based Solutions 
T2  - Schaum's outline Series 
SN  - 70068933
U1  - 516.24 
PY  - 2021///
CY  - New York
PB  - McGRAW-HILL
KW  - Mathematics
ER  -