00390nam a2200109Ia 4500008004100000082002600041100002200067245007600089260007100165650002400236650002000260220204s9999    xx            000 0 und d  a556.51:65(035)bVen.4  aVenkateswaralu, J 0aTechnical manual on watershed management-IV. Non-arable farming systems  aHyderabadbNational Institute of Agricultural Extension Management  aAgroforestry system  aSocial forestry