BOOKQUE

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Nitrex: the timing of response of coniferous forest eco-systems to experimentally-changed nitrogen deposition
A. Tietema , R F. Wright , K. Blanck , A W. Boxman , M. Bremeier , B A. Emmett , P. Gundersen , H. Hultberg , O J. Kjonaas , F. Moldan , J G M. Roelofs , P. Schleppi , A O. Stuanes , N. Van Breemen
· 1995
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Oligotrophication: A Self-accelerating Process in Lakes Subjected to Excessive Supply of Acid Substances
O. Grahn , H. Hultberg , L. Landner
· 1974
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Group report: can we differentiate between natural and anthropogenic acidification?
B A. Emmett , D. Charles , K H. Feger , R. Harriman , H F. Hemond , H. Hultberg , D. Lessmann , A. Ovalle , H. Van Miegroet , H W. Zoettl
· 1994
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Thermally stratified acid water in late winter - a key factor inducing self-accelerating processes which increase acidification: ppr. - Ist. Int. Symp - Columbus Ohio May 1975
H. Hultberg
· 1975
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Influence of management practices in catchments on freshwater acidification: afforestation in the United Kingdom and North America
R. Harriman , G E. Likens , H. Hultberg , Colin Neal
· 1994
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NITREX: responses of coniferous forest ecosystems to experimentally changed deposition of nitrogen
R F. Wright , J G M. Roelofs , M. Bremeier , K. Blanck , A W. Boxman , B A. Emmett , P. Gundersen , H. Hultberg , O J. Kjonaas , F. Moldan , A. Tietema , N. Van Breemen , H F G. Van Dijk
· 1995
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Evaluation of integrated monitoring in terrestrial reference areas of Europe and North America: the Pilot Programme 1989-91
J. Cerny , H. Hultberg , D. Jeffries , A. Jenkins , B. Hihlgard , T. Paces , G. Soderman
· 1992
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NITREX - nitrogen saturation experiments
R F. Wright , N. Van Breemen , B A. Emmett , J G M. Roelofs , A. Tietema , H A. Verhoef , M. Hauhs , L. Rasmussen , H. Hultberg , H. Persson , A O. Stuanes
· 1992
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The Geothermal Plant at Ahuachapan in El Salvador and Its Possible Effects on the Water Quality on the Border River Rio Paz Between El Salvador and Guatemala
Arne Jernelöv , H. Hultberg , I. Rosenblum
· 1976
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Dry deposition of sulphur dioxide. (Working Group report).
J W. Erisman , F. Moldan , David Fowler , G. Lovett , H. Hultberg , J. Kesselmeier , R. Koble , J. Padro , G. Runge , C. Simmons , Sj Slanina , M. Zapletal
· 1993