00764nam a2200229 a 450000100080000000500110000800800410001902000180006010000160007824501020009426000270019630000150022352001670023865000110040565000160041665000160043265000200044865300190046865300170048770000150050470000150051913926602012-04-30       1991    bl uuuu      00u1 u    #d  a3-528-02059-81 aSCHMITZ, H.  aAnimal traction in rainfed agriculture in Africa and South Americabdeterminants and experiences.  aEschborn: Viewegc1991  a311p.cil.  aGeneral factors influencing the use of draift animals. Features of draf animal husbandry. Aspects of implement use. Case studies: west Africa. Case study: Brazil.  aAfrica  aagriculture  aAgricultura  aTração Animal  aAmerica do Sul  aAnimal power1 aSOMMER, M.1 aWALTER, S.