You, Xia2014-03-142014-03-141993-05-05etd-03172010-020139http://hdl.handle.net/10919/41657v, 176 leavesBTDapplication/pdfenIn CopyrightLD5655.V851 1993.Y68Environmental protection -- DatabasesEnvironmental protection -- Decision makingInformation storage and retrieval systems -- Environmental protectionA concept database for environmental planningMajor paperhttp://scholar.lib.vt.edu/theses/available/etd-03172010-020139/