379 A.2d 654 A D, Inc., Appellant v. Zoning Hearing Board, East Nottingham Township, Chester County, Pennsylvania, Appellee. Commonwealth Court of Pennsylvania.Argued October 3, 1977 November 14, 1977. Zoning — Variance — Pennsylvania Municipalities Planning Code, Act 1968, December 31, P.L. 805 — Unnecessary hardship — Reasonable profit — Economic hardship — Burden of proof. […]