TY  - BOOK
AU  - Platts , John .
AU  - Wrigley, Alfred .
TI  - A Companion to Wrigley`s Collection of Examples and Problems
U1  - 511.9 
PY  - 1861///
CY  - London
PB  - Deighton,Beel And Co.
KW  - Mathematical Processes
KW  - G-Mathematics
ER  -