351 A.2d 318 Costos C. Costopoulos et al. v. Zoning Board of Adjustment and the Borough of Carlisle. Costos C. Costopoulos et al., Appellants. Commonwealth Court of Pennsylvania.Argued December 3, 1975 February 2, 1976. Ordinance — Constitutionality — Burden of proof — Signs — Public property — Exclusionary zoning — Control of public areas — […]