WHO.
Environmental Health Criteria 200 Copper. Geneva: World Health Organisation; 1998.
WHO.
Environmental Health Criteria 200 Copper. Geneva: World Health Organization; 1998.
Temple PJ, Sun JE-J, Krause GHM.
Peroxyacetyl nitrates (PAN) and other minor pollutants. Recognition of Air Pollutant Injury to Vegetation: A Pictorial Atlas. 2nd Edition. Air & Waste Management Association, Pittsburgh, PA. 1998 :pp 6-1 to 6-2.