[1]
Olbrich, K. et al. 1994. HOW GREAT A RISK DOES ACID RAN POSE TO COMMERCIAL FOREST SOILS THE EASTERN TRANSVAAL?. Clean Air Journal. 9, 1 (Jun. 1994), 17–20. DOI:https://doi.org/10.17159/caj/1994/9/1.7117.