00748nam a2200193 a 450000100080000000500110000800800410001910000120006024501210007226000360019330000090022952001950023865000180043365000180045165000280046965000200049765300130051765300240053011565312018-05-29       1980    bl uuuu     u0uu1 u    #d1 aLAL, H.  aAgricultural mechanization for Semi-Arid Tropics Brasilbinforme trimestral de atividades (1 jan. to 30 march 1980).  aPetrolina: EMBRAPA-CPATSAc1980  a9 p.  aFabrication of attachments of wheeled tool carrier; Testing of wheeled tool carrier and its attachments; In-depth study of present status of mechanization; Agricultural implement industries.  aMechanization  aMecanização  aMecanização Agrícola  aTração Animal  aNordeste  aRegião semi-árida