International Congress of Ecology (1974 :)
Overview
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Titles
Unifying concepts in ecology : = report of the plenary sessions of the First international congress of ecology, The Hague, the Netherlands, September 8-14, 1974 /
by:
Dobben, W. H. van.; Lowe-McConnell, R. H.; International Congress of Ecology (1974 :)
(Language materials, printed)
Subjects