TY  - BOOK
AU  - CROWDER, Norman A.
AU  - MARTIN, G.C.
TI  - TRIGONOMETRY : A FIRST COURSE
SN  - 0 340 04926 X
U1  - 516.24 
PY  - 1968///
CY  - 
PB  - English Universities Press Limited, London 
ER  -