553 A.2d 1053 Raphael Balthazar, Appellant v. Commonwealth of Pennsylvania, Department of Transportation, Bureau of Driver Licensing, Appellee. Commonwealth Court of Pennsylvania.Submitted on briefs November 16, 1988. February 15, 1989. Motor vehicles — Suspension of motor vehicle operator’s license — Refusal of blood test — Burden of proof — Comprehension of English — Credibility — […]