Trees,crops and soil fertility

Antzeko izenburuak

• Trees, crops and soil fertility: concepts and research methods
  Argitaratua: (2003)
• Trees, crops and soil fertility; concepts and research methods
  nork: G Schroth
  Argitaratua: (2003)
• Soil fertility and crop production
  Argitaratua: (2002)
• Soil fertility and Crop Production
  nork: Krishna ,K.R
  Argitaratua: (2002)
• Phosphorus in soils, crops and fertilizers
  nork: Biswas, T D
  Argitaratua: (1979)