Soil and fertilizer nitrogen : review study with particular reference to plant nutrition and environmental protection /

Antzeko izenburuak

• Nitrogen in agricultural soils /
  Argitaratua: (1982)
• Application of nitrogen-fixing systems in soil improvement and management
  nork: Hamdi, Y.A
  Argitaratua: (1982)
• The role of nitrogen in grassland productivity : a review of information from temperate regions /
  nork: Whitehead, D. C.
  Argitaratua: (1970)
• Nitrogen and soil organic matter proceedings of a conference organized by the soil scientists of the National Agriculture Advisory Service, October 22nd-23rd 1964
  Argitaratua: (1969)
• Nitrogen and rice.
  Argitaratua: (1979)