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

অনুরূপ উপাদানগুলি

• Nitrogen in agricultural soils /
  প্রকাশিত: (1982)
• Soil and fertilizer nitrogen : review study with particular reference to plant nutrition and environmental protection /
  অনুযায়ী: Winteringham, F. P. W.
  প্রকাশিত: (1984)
• Application of nitrogen-fixing systems in soil improvement and management
  অনুযায়ী: Hamdi, Y.A
  প্রকাশিত: (1982)
• The role of nitrogen in grassland productivity : a review of information from temperate regions /
  অনুযায়ী: Whitehead, D. C.
  প্রকাশিত: (1970)
• Nitrogen and rice.
  প্রকাশিত: (1979)