@book{4803,
	title = {Man's impact on the global environment :},
	publisher = {M.I.T.P.},
	year = {1970. },
	address = {Cambridge (Mass.)},
	note = {Sponsored by the Massachusett. },
	url = {http://firstsearch.oclc.org/WebZ/DCARead?standardNoType=1&standardNo=0262690276:srcdbname=worldcat:fromExternal=true&sessionid=0}
}