1. PRELIMINARY STUDIES OF AIRBORNE PARTICULATE EMISSIONS FROM THE AMPELLUM S.A. COPPER SMELTER, ZLATNA, ROMANIA. Authors: BEN J. WILLIAMSON, NICOLAE HAR, WILLIAM O. PURVIS, ANA-MARIA RUSU.2. HEAVY METAL SOIL CONTENT AS AN INDICATOR OF POLLUTION. Authors: ANA-MARIA RUSU, WILLIAM DUBBIN, NICOLAE HAR, KATALIN BARTÓK, WILLIAM PURVIS, BEN J. WILLIAMSON.