00397    a2200133   4500082001700000100002100017245006700038260005000105300001900155650001800174650002800192700002000220700002300240  a577.583bSIL  aSilva, Sarath R.  aSand dunes in southern Sri Lankabformation and current issues  aDehiwalabGSMB Technical Servicesc2008g2008  av, 67p.c26cm.  aEARTH SCIENCE  aEARTH SCIENCE OF EUROPE  aHerath, M.M.J.W  aSilva, K.T.U.S. De