00413    a2200133   4500020001500000082001600015245009100031260004000122300001800162650003300180650001400213650002500227650002700252  a9558177024  a333.95bRES  aResource material on biodiversity for general certificate of educationbadvanced level  aColombobIUCN Sri Lankac1999g1999  avi,83p.c30cm  aECONOMICS OF LAND AND ENERGY  aECONOMICS  aBIOLOGICAL RESOURCES  aOTHER NATURAL RESOURCE