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  1. 41
    Nitrogen fixation research progress : proceedings of the 6th International Symposium on Nitrogen Fixation, Corvallis, OR 97331, August 4-10, 1985 /

    Nitrogen fixation research progress : proceedings of the 6th International Symposium on Nitrogen Fixation, Corvallis, OR 97331, August 4-10, 1985 /

    Published 1985
    Subjects:
    Conference Proceeding Book

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  2. 42
    Nitrogen and rice.

    Nitrogen and rice.

    Published 1979
    Subjects:
    Book

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  3. 43
    Biological nitrogen fixation and sustainability of tropical agriculture : proceedings of the Fourth International Conference of the African Association for Biological Nitrogen Fixation (AABNF), held at the International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria, 24-28 September 1990 /

    Biological nitrogen fixation and sustainability of tropical agriculture : proceedings of the Fourth International Conference of the African Association for Biological Nitrogen Fixa...

    Published 1992
    Subjects: “…Nitrogen in agriculture Tropics.…”
    Book

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  4. 44
    Denitrification

    Denitrification by Payne, W. J. (William Jackson), 1925-

    Published 1981
    Subjects:
    Book

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  5. 45
    Nitrogen metabolism in plants

    Nitrogen metabolism in plants by Bray, C. M., 1945-

    Published 1983
    Subjects: “…Nitrogen Metabolism…”
    Book

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  6. 46
    Nitrogen metabolism in plants

    Nitrogen metabolism in plants by Beevers, Leonard

    Published 1976
    Subjects:
    Book

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  7. 47
    Plants and nitrogen

    Plants and nitrogen by Lewis, Owen A. M.

    Published 1985
    Subjects: “…Nitrogen Metabolism…”
    Book

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  8. 48
    Nitrogen fertilization and management in tropical rice /

    Nitrogen fertilization and management in tropical rice / by Sanchez, Pedro A., 1940-

    Published 1972
    Subjects:
    Book

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  9. 49
    Denitrification loss of fertilizer nitrogen in paddy soils : its recognition and impact /

    Denitrification loss of fertilizer nitrogen in paddy soils : its recognition and impact / by Watanabe, I.

    Published 1979
    Subjects:
    Book

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  10. 50
    Recent developments in research on nitrogen fertilizers for rice /

    Recent developments in research on nitrogen fertilizers for rice / by Craswell, E. T.

    Published 1980
    Subjects: “…Nitrogen fertilizers.…”
    Book

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  11. 51
    Soil management and nitrogen fertilization for increasing the yield of soybean in Japan /

    Soil management and nitrogen fertilization for increasing the yield of soybean in Japan / by Kuwahara, Masato

    Published 1986
    Subjects: “…Nitrogen fertilizers.…”
    Book

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  12. 52
    An improved method for preparing gravimetric standard gas mixtures of helium-4 in nitrogen /

    An improved method for preparing gravimetric standard gas mixtures of helium-4 in nitrogen / by Bibawy, Nabil A.

    Published 1990
    Subjects:
    Unknown

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  13. 53
    Nitrogen fixation : fundamentals and applications /

    Nitrogen fixation : fundamentals and applications /

    Published 1995
    Subjects:
    Conference Proceeding Book

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  14. 54
    Root nodules of legumes structure and functions

    Root nodules of legumes structure and functions by Bergersen, F. J.

    Published 1982
    Subjects:
    Book

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  15. 55
    Simulation of nitrogen behaviour in soils/

    Simulation of nitrogen behaviour in soils/ by Beek, J.

    Published 1973
    Subjects:
    Book

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  16. 56
    Denitrification in the nitrogen cycle : proceedings of a NATO Advanced Research Workshop on Denitrification in the nitrogen cycle, held May 21-26, 1983, in Braunschweig, West Germany /

    Denitrification in the nitrogen cycle : proceedings of a NATO Advanced Research Workshop on Denitrification in the nitrogen cycle, held May 21-26, 1983, in Braunschweig, West Germa...

    Published 1985
    Subjects:
    Conference Proceeding Book

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  17. 57
    Thermal reactions of shale-oil components : plant pigments as probable precursors of nitrogenous compounds in shale oil /

    Thermal reactions of shale-oil components : plant pigments as probable precursors of nitrogenous compounds in shale oil / by Jackson, Larry P.

    Published 1975
    Subjects:
    Book

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  18. 58
    Rhizobium germplasm resources at ICRISAT Center /

    Rhizobium germplasm resources at ICRISAT Center /

    Published 1991
    Subjects:
    Book

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  19. 59
    Utilization of the azolla-anabaena complex as a nitrogen fertilizer for rice /

    Utilization of the azolla-anabaena complex as a nitrogen fertilizer for rice /

    Published 1977
    Subjects:
    Book

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  20. 60
    Biological nitrogen fixation in forest ecosystems foundations and applications

    Biological nitrogen fixation in forest ecosystems foundations and applications

    Published 1983
    Subjects:
    Book

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