@book{160968,
	author = {Walde, Terry and American Petroleum Institute, API and Walde, Terry},
	title = {Summary of processes, human exposures and technologies applicable to low permeability soils},
	series = {API Soil & groundwater research bulletin},
	note = {Este documento puede ser consultado en la página de API},
	url = {http://api-ep.api.org/filelibrary/bulletin1.pdf}
}