See also: watermill
East Riding of Yorkshire
Essex
Lancashire
Lincolnshire
Merseyside
Norfolk
North Lincolnshire
Peterborough
Staffordshire
Suffolk
Surrey
Sussex
Wiltshire
... by a, we have <math> x^2 + \left( \frac{b}{a} \right) x + \frac{c}{a}=0 </math> which is equivalen ...