Ecological indicators for the assessment of the quality of air, water, soil, and ecosystems : papers presented at a symposium held in Utrecht, October 1982 - Best, E. P. H.; Haeck, J. (Dordrecht : Reidel, 1983)
Reprinted from Environmental monitoring and assessment, v. 3, nos. 3 and 4.
Περιέχει βιβλιογραφία.
Keywords: Indicators (Biology) -- Congresses; Environmental monitoring -- Congresses; Περιβάλλον.