Nitrogen and soil organic matter proceedings of a conference organized by the soil scientists of the National Agriculture Advisory Service, October 22nd-23rd 1964

Antzeko izenburuak

• Nitrogen in agricultural soils /
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• Soil and fertilizer nitrogen : review study with particular reference to plant nutrition and environmental protection /
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• Application of nitrogen-fixing systems in soil improvement and management
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• The role of nitrogen in grassland productivity : a review of information from temperate regions /
  nork: Whitehead, D. C.
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• Nitrogen and rice.
  Argitaratua: (1979)