381 A.2d 16 GENERAL MOTORS CORPORATION v. ROY J. PISKOR [No. 64, September Term, 1977.]Court of Appeals of Maryland. Decided December 23, 1977. JUDGMENTS — RES JUDICATA — Final Judgment On Merits Bars Relitigating Not Only Those Matters Actually Decided In Prior Case, But Also Those Which Could Have Been Litigated In Prior Adjudication — […]