TY  - BOOK
AU  - Drooyan, Irving.
AU  - Hadel, Walter,
ED  - 
ED  - 
ED  - 
ED  - 
TI  - : an analytic approach 
SN  - 2
PY  - 1967///]46
CY  - New York
PB  - Macmillan
KW  - 
KW  - 2
KW  - 0
KW  - 6
KW  - 20
KW  - Plane trigonometry
N1  - 5
ER  -