00314nam a2200109Ia 450000500170000000800410001708200160005810000200007424500620009426000400015630000080019620260224040931.0260224s9999||||xx |||||||||||||| ||und||  a333.731 CON  aConacher, A.J.  0aLand degradation in mediterranean environments of the …  aNew York: John Wiley & Sons. c1998  a491