COM. Ex Rel. CARROLL v. TATE , 442 Pa. 45 ( 1971 )
SWEET v. PA. LRB , 457 Pa. 456 ( 1974 )
Leahey v. Farrell , 362 Pa. 52 ( 1949 )
Costigan v. Philadelphia Finance Department Employees Local 696 , 462 Pa. 425 ( 1975 )