Nitrogen in agricultural soils /

Lignende værker

• Nitrogen and soil organic matter proceedings of a conference organized by the soil scientists of the National Agriculture Advisory Service, October 22nd-23rd 1964
  Udgivet: (1969)
• Soil and fertilizer nitrogen : review study with particular reference to plant nutrition and environmental protection /
  af: Winteringham, F. P. W.
  Udgivet: (1984)
• Application of nitrogen-fixing systems in soil improvement and management
  af: Hamdi, Y.A
  Udgivet: (1982)
• Mineral nitrogen in the plant-soil system /
  af: Haynes, R. J.
  Udgivet: (1986)
• The role of nitrogen in grassland productivity : a review of information from temperate regions /
  af: Whitehead, D. C.
  Udgivet: (1970)