TY  - BOOK
AU  - Hall, 1848-1934 (Henry Sinclair) 
AU  - Knight, S. R.
TI  - Elementary algebra for schools : (containing a chapter on graphs) 
SN  - 8183340024 
U1  - 512 HAL 2005 
PY  - 2005///
CY  - New Delhi
PB  - Essential Books
KW  - Algebra
ER  -