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