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