@book{1603,
	title = {Man's impact on the global environment :},
	publisher = {MIT Press},
	year = {1972. },
	address = {Cambridge, Mass. [u.a.]},
	edition = {5. print.},
	url = {http://firstsearch.oclc.org/WebZ/DCARead?standardNoType=1&standardNo=0262690276:srcdbname=worldcat:fromExternal=true&sessionid=0}
}