▁Thomas , ▁E . ▁( 2 0 0 1 ). ▁An ▁ac oust ic ▁analysis ▁of ▁v owel ▁variation ▁in ▁New ▁World ▁English . ▁Dur ham , ▁Duke ▁UP . ▁Wis nos ky , ▁M . ▁( 2 0 0 3 ). ▁' P itt s burgh ese ' ▁in ▁Pitts burgh ▁humor . ▁Master ' s ▁th esis ▁in ▁L ingu istics . ▁Pitts burgh , ▁University ▁of ▁Pitts burgh . ▁ ▁Further ▁reading ▁▁▁ ▁External ▁links ▁ ▁Pitts burgh ▁Spe ech ▁& ▁Society , ▁University ▁of ▁Pitts burgh ▁ ▁It ' s ▁Not ▁The ▁S ights , ▁It ' s ▁The ▁S ounds , ▁" P itt s burgh ▁is ▁the ▁Gal ap ag os ▁Islands ▁of ▁American ▁dialect ", ▁New ▁York ▁Times ▁article , ▁March ▁ 1 7 , ▁ 2 0 0 6 ▁ ▁American ▁Vari eties : ▁Ste el ▁Town ▁Spe ak , ▁part ▁of ▁P BS ' s ▁Do ▁You ▁Spe ak ▁American ? '' ▁ ▁Category : American ▁English ▁Category : Culture ▁of ▁Pitts burgh ▁Category : American ▁sl ang ▁Category : City ▁col lo qu ial s ▁Category : Sc ot ch - I r ish ▁American ▁culture ▁in ▁Pennsylvania ▁Category : Work ing - class ▁culture ▁in ▁the ▁United ▁States <0x0A> </s> ▁F uel ▁pol ishing ▁is ▁the ▁technical ▁clean ing ▁process ▁used ▁to ▁remove ▁or ▁filter ▁micro b ial ▁cont am ination ▁from ▁oil ▁and ▁hydro car bon ▁fuel ▁in ▁storage . ▁It ▁is ▁essentially ▁the ▁removal ▁of ▁water , ▁sed iment ▁and