Biodiversity Heritage Library
Subject "Effects of human beings on"
Critical trends in Illinois ecosystems /
By: Critical Trends Assessment Program. - Illinois. Natural History Survey Division - Illinois. Office of Realty and Environmental Planning
Publication info: Springfield, Ill. :Illinois Natural History Survey,2001.
Contributed by: University Library, University of Illinois Urbana Champaign
Subjects: Conservation of natural resources Ecological assessment (Biology) Effects of human beings on Environmental impact analysis Environmental quality Illinois Nature Pollution