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  1. 1
    Grass land nitrogen
    af White head,D C
    Udgivet 1995
    Printed Book
  2. 2
    Grassland invertebrates : ecology ,influence on soil fertility and effects on plant growth
    Printed Book
  3. 3
    Plant nutrition for food security:Guide for integrated nutrition management
    af Roy,R N
    Udgivet 2007
    Printed Book
  4. 4
    Encyclopedia of organic farming-vol.ii
    af Howard ,Daniel
    Udgivet 2008
    Printed Book
  5. 5
    Crop production and management
    af Morachan, Y B
    Udgivet 1993
    Printed Book
  6. 6
    Soil fungi and soil fertility
    af Garrett, S D
    Udgivet 1963
    Printed Book
  7. 7
    Soils: their chemistry and fertility in tropical Asia
    af Bali V P
    Udgivet 1970
    Printed Book
  8. 8
    Principles and practices of agronomy
    af Singh, S S
    Udgivet 1988
    Printed Book
  9. 9
    Principles and practices of agronomy
    af singh, S S
    Udgivet 1988
    Printed Book
  10. 10
    Fertilizing for maximun yields
    af Cooke, G W
    Udgivet 1982
    Printed Book
  11. 11
    Agricultural testament
    af Howard, Albert
    Udgivet 1945
    Printed Book
  12. 12
    Soils : their chemistry and fertility in tropical Asia
    af Bali, Y.P
    Udgivet 1970
    Printed Book
  13. 13
    Soils : their chemistry and fertlity in tropical Asia
    af Bali, Y.P
    Udgivet 1970
    Printed Book
  14. 14
    Soils : their chemistry and fertility in tropical Asia
    af Bali, Y.P
    Udgivet 1970
    Printed Book
  15. 15
    Soil science: its principles and practice
    af Weir, Wilbert Walter
    Udgivet 1949
    Printed Book
  16. 16
    Principles and practices of oganic farming
    af Panda, SC
    Udgivet 2012
    Printed Book
  17. 17
    Soil productivity and crop growth
    af Raheja, P.C
    Udgivet 1966
    Printed Book
  18. 18
    Irriagation with saline water
    af Paliual, K.V
    Udgivet 1972
    Printed Book
  19. 19
    Soils and soil fertility
    af Thompson, Lovis M
    Udgivet 1957
    Printed Book
  20. 20
    Possibilities of increasing world food production
    af Pawley, Walter H
    Udgivet 1963
    Printed Book
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