277 A.2d 589 CALHOUN ET AL. v. COUNTY BOARD OF APPEALS OF BALTIMORE COUNTY ET AL. [No. 428, September Term, 1970.]Court of Appeals of Maryland. Decided June 1, 1971. ZONING — Burden Of Proving A Non-Conforming Use Is On The Claimant Of The Use. p. 267 ZONING — Non-Conforming Uses — Testimony By Neighbors Regarding […]