TY  - BOOK
AU  - Drooyan,Irving
AU  - Hadel,Walter
AU  - Carico,Charles C.
TI  - Essentials of trigonometry
SN  - 0023302208
PY  - 1977///
CY  - New York
PB  - Macmillan
KW  - Trigonometry, Plane
N1  - 'A portion of this material has been adapted from Trigonometry: an analytical approach.'; Includes index
ER  -