Land degradation : development and breakdown of terrestrial environments / C.J. Barrow. Barrow, Christopher J. Nature Effect of human beings on. Land degradation. Pollution Environmental aspects. Soil conservation. GF75 .B37 1991 628.55 20 BAL Includes bibliographical references and index. Cambridge [England] ; New York : Cambridge University Press, 1991. 1991. 1991 Text xvii, 295 p. : http://www.loc.gov/catdir/description/cam024/90002534.html http://www.loc.gov/catdir/toc/cam029/90002534.html eng