00652naa a2200205 a 450000100080000000500110000800800410001910000170006024501560007726000090023365000140024265000240025665000130028065000100029365000160030365000250031965300380034470000190038277300450040116061861995-06-27       1985    bl ---       0--  u    #d1 aCHANG, J. F.  aAn analysis of competition between intercropped cowpea and maize. I. Soil N and P levels and their relationships with dry matter and seed productivity.  c1985  aAgronomia  aFertilidade do Solo  aFósforo  aMilho  aNitrogênio  aRotação de Cultura  aSISTEMA AGRICOLA E AGROFLORESTAIS1 aSHIBLES, R. M.  tField Crops Res.gv.12, p.133-143, 1985.