612 A.2d 645 COMMONWEALTH of Pennsylvania, STATE SYSTEM OF HIGHER EDUCATION, Petitioner, v. UNITED PLANT GUARD WORKERS OF AMERICA, LOCAL UNION NO. 509, Respondent. Commonwealth Court of Pennsylvania.Argued December 16, 1991. Decided July 9, 1992. Reargument Denied August 17, 1992. Petition For Allowance of Appeal Denied December 29, 1992. Appeal from the State System of […]