00417    a2200145   4500020001500000082001500015100001500030245003800045260007700083300002400160440004200184650001400226650001600240650001500256  a9251003467  a631.3bSEI  aSeixas, J.  aMachinery servicing organizations  aRomebFood and agriculture organizatio of the united nationsc1977g1977  avii,97p.billc30cm  aFAO agricultural services bulletin 30  aMachinery  aAgriculture  aEquipments