This opinion cites 18 cases:

Pittsburgh Trust for Cultural Resources v. Zoning Board of Adjustment ( 1992 )


Wm. Penn Parking Garage, Inc. v. City of Pittsburgh ( 1975 )


Armco Advanced Materials Corp. v. Pennsylvania Public Utility Commission ( 1993 )


Harristown Development Corp. v. Commonwealth ( 1992 )


Tool Sales & Service Co. v. Commonwealth ( 1993 )


Popowsky v. Pennsylvania Public Utility ( 1997 )


Barasch v. Pennsylvania Public Utility Commission ( 1988 )


NATIONAL SOLID WASTES MGT. v. Casey ( 1990 )


City of Pittsburgh v. Pennsylvania Department of Transportation ( 1980 )


Armco Advanced Materials Corp. v. Pennsylvania Public Utility Commission ( 1990 )


At & T v. Pennsylvania Public Utility Commission ( 1999 )


Ardolino v. Pennsylvania Securities Commission ( 1992 )


Christensen v. Harris County ( 2000 )


York v. Pennsylvania Public Utility Commission ( 1972 )


Rudolph v. Pennsylvania Blue Shield ( 1998 )


Mazzella v. Koken ( 1999 )


Pennsylvania Coal Mining Ass'n v. Insurance Department ( 1977 )


Harristown Development Corp. v. Commonwealth ( 1990 )