00481    a2200169   4500020001500000082001700015100002500032245004800057260003100105300002000136650001900156650002800175650001800203650003400221650003400255700002200289  a0340632178  a551.415bWIL  aWilliams, Martin A J  aInteractions of desertification and climate  aLondonbARNOLDc1996g1996  axiv,270p.c24cm  aEarth sciences  aArid-land geomorphology  aGeomorphology  aGeomorphology and hydrosphere  aGeology,hydrology,meteorology  aBalling, Robert C