TY  - BOOK
AU  - Durell, Clement V
AU  - Robson, A
TI  - Advanced trigonometry
SN  - 9780486432298
U1  - 516.24 DUR 
PY  - 2003///
CY  - Mineola, N.Y
PB  - Dover Publications
KW  - Trigonometry
ER  -