00545nam a2200169Ia 4500001001000000003001000010005001700020008004100037020001500078040000900093082002000102100002700122245009300149264005800242300003400300650004100334000003196MX-MdCICY20260521090229.0240627s9999    xx            000 0 und d  a0521353335  cCICY04a631.4bB27 19911 aBarrow, Christopher J.10aLand degradation :bdevelopment and breakdown of terrestrial environments /cC.J. Barrow31aCambridge, Eng. :bCambridge University Press, c1991  axvii, 295 p. :bil. ;c25 cm.14aHOMBRExINFLUENCIA EN LA NATURALEZA.