H. Hultberg

Influence of management practices in catchments on freshwater acidification: afforestation in the United Kingdom and North America
Harriman, R., Gene E. Likens, H. Hultberg, and C. Neal. 1994. “Influence Of Management Practices In Catchments On Freshwater Acidification: Afforestation In The United Kingdom And North America”. In C. E. W. Steinberg And R. F. Wright (Eds.). Acidification Of Freshwater Ecosystems: Implications For The Future, 83-101. J. Wiley and Sons, Inc., New York.
Sulphur deposition to forested catchments in northern Europe and North America-large-scale variations and long-term dynamics
Hultberg, H., and Gene E. Likens. 1992. “Sulphur Deposition To Forested Catchments In Northern Europe And North America-Large-Scale Variations And Long-Term Dynamics”. In S. E. Schwartz And W. G. N. Slinn (Coordinators). Precipitation Scavenging And Atmosphere-Surface Exchange. Vol. 3-The Summers Volume: Applications And Appraisals, 1343-1365. Hemisphere Publishing Corporation.