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  1. 1

    Biological nitrogen fixation in sustainable rice farming by Watanabe, Iwao

    Published 1991
    Analytics

    Biological nitrogen fixation in sustainable rice farming
  2. 2

    The NPK nutrition and moisture relation studies and their effects on quality of Virginia tobacco [microform] by Wiroatmodjo, Joedojono 1945-

    Published 1980
    Visual Material

    The NPK nutrition and moisture relation studies and their effects on quality of Virginia tobacco [microform]
  3. 3

    Nitrogen and rice

    Published 1979
    Book

    Nitrogen and rice
  4. 4

    Nitrogen and rice

    Published 1979
    Book

    Nitrogen and rice
  5. 5

    Nitrogen and rice

    Published 1979
    Book

    Nitrogen and rice
  6. 6

    Biological nitrogen fixation in rice soils by Watanabe, Iwao

    Published 1978
    Analytics

    Biological nitrogen fixation in rice soils
  7. 7

    The effects of N, K, and CA on the growth yield and quality fo snap cowpea [microform]. by Bautista, Ofelia Karganilla 1940-

    Published 1977
    Visual Material

    The effects of N, K, and CA on the growth yield and quality fo snap cowpea [microform].
  8. 8

    Effects of different light intensities, nitrogen levels and population densities on grain sorghum [microform]. by Carcallas, Casimiro Decenilla 1942-

    Published 1977
    Visual Material

    Effects of different light intensities, nitrogen levels and population densities on grain sorghum [microform].
  9. 9

    Nitrogen and phosphorous requirements of gmelina arborea (Roxb.) seedlings by Serna, Constante B. 1935-

    Book

    Nitrogen and phosphorous requirements of gmelina arborea (Roxb.) seedlings
  10. 10

    N P K nutrition of sugarcane by Pecho, Venancio M. 1930-

    Book

    N P K nutrition of sugarcane

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