Weidner v. Workmen's Compensation Appeal Board , 497 Pa. 516 ( 1982 )
MacNeill v. Workmen's Compensation Appeal Board , 120 Pa. Commw. 320 ( 1988 )
Daugherty v. WCAB (JONES & L. STEEL C.) , 97 Pa. Commw. 142 ( 1986 )