Items where Research Program is "Forestry (FOR)" and Year is 1991
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Nilsson, S. (1991). European Forest Decline: The Effects of Air Pollutants and Suggested Remedial Policies. Stockholm: The Royal Swedish Academy of Agriculture and Forestry.
Nilsson, S. & Pitt, D.C. (1991). Mountain World in Danger: Climate Change in the Forests and Mountains of Europe. London: Earthscan Publications Ltd. ISBN 1-85383-118-2