Assessment of methods for measuring available nitrogen, potassium, calcium, manganesium, zinc, copper, manganese and iron in soils or [sic] Papua [sic] New Guinea /

Lignende værker

• Assessment of methods for measuring available nutrients in Papua New Guinea soils II : microelements, manganese, iron, copper and zinc /
  af: Macfarlane, Mary
  Udgivet: (1990)
• Effect of liming on soil pH, phosphorus availability and uptake Siratro in some Papua New Guinea soils /
  af: Pitala, Joachim Aquinas Richard
  Udgivet: (1990)
• Soils of Papua New Guinea /
  af: Bleeker, Pieter
  Udgivet: (1983)
• Constituents and properties of soils /
  af: Bonneau, Maurice
  Udgivet: (1982)
• Soil organic matter : analysis and interpretation /
  Udgivet: (1996)