The water footprint assessment manual : setting the global standard / Arjen Y. Hoekstra ... [et al.]. Hoekstra, Arjen Y., 1967- Water consumption Measurement. Water consumption Environmental aspects. Water-supply Accounting. TD499 .W384 2011 333.91 22 WAT Includes bibliographical references and index. London ; Washington, DC : Earthscan, 2011. 2011. 2011 Text xviii, 203 p. : http://www.loc.gov/catdir/enhancements/fy1111/2010047901-b.html eng