Ecological indicators for the assessment of the quality of air, water, soil, and ecosystems :  papers presented at a Symposium held in Utrecht, October 1982 / 
edited by E.P.H. Best and J. Haeck 
 - Dordrecht :  Boston,  1983 
 - 1v. 
<br/><br/><label>ISBN: </label>9027717087 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology<br/>Soil pollution<br/>Air--Pollution<br/>Water--Pollution