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1
International Working group on Project 5 ecological effects on human activities on the value and resources of lake, marshes, rivers, deltas, estuaries and coastal zones, Paris, 13-...
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2
Expert Panel on project 2 ecological effects of different land uses and management practices on temperate and mediterranean forest landscapes, Paris, 16-19 April, 1974 : final repo...
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3
Expert Panel on Project 11 ecological effects of energy utilization in urban and industrial systems, Ban Nauheim, 16-19 October, 1973.
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