TY  - BOOK
AU  - Hoffer, Alan R.
AU  - Hoffer, Alan R.
TI  - Focus on Geometry : An intergrated approach
SN  - 9780201869705
U1  - 510 
PY  - 1998///
CY  - London
PB  - Addison Wesley Longman, Inc
KW  -  
KW  - Logic
KW  - Derivations
KW  - Trigonometry
ER  -