TY  - BOOK
AU  - Abbott,P.
AU  - Wardle,M.E.
TI  - Trigonometry
T2  - Teach yourself books
SN  - 0844239437 
AV  - QA531.A2 1992 
PY  - 1992///
CY  - Lincolnwood.
PB  - NTC Pub. Group
KW  - Trigonometry
ER  -