00632nam a2200193 a 450000100080000000500110000800800410001910000140006024500810007426000720015530000100022749000280023750000650026565000120033065000350034265000350037765000120041265000140042410386732014-02-22       1994    bl uuuu     u00u1 u    #d1 aAFORS, M.  aWeeds and weed management in small-scale cropping systems in northern Zambia  aUppsala (Suecia): Swedish University of Agricultural Sciencesc1994  a190p.  aCrop Production Science  aTesis (Dr) Swedish University of Agricultural Sciences, 1990  aESCARDA  aEXPLOTACION AGRICOLA EXTENSIVA  aEXPLOTACION EN PEQUEÑA ESCALA  aMALEZAS  aSUDAFRICA