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  1. 1

    Process design manual for nitrogen control.

    Опубликовано 1975
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  2. 2

    Studies on the behavior of nitrogen absorbed at different stages of growth of the rice plant (Oryza sativa L.) in relation to grain production по Garcia, Consolacion Villapando 1937-

    Опубликовано 1966
    Диссертация


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  3. 3

    Physiological effects of applied nitrogen and phosphorus on the growth and development of winged bean, Psophocarpus tetragonolobus по Escarlos, Juliana Gante Atanacio 1931-

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  4. 4

    Nitrogen availability and release from organic matter of some Philippine soils under flooded conditions по Lopez, Amelia B. 1931-

    Опубликовано 1957
    Диссертация


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  5. 5

    Nitrogen transformations in flooded soils по Salandanan, Salvador 1932-

    Опубликовано 1966
    Диссертация


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  6. 6

    In situ determination of biological nitrogen fixation by blue-green algae in lowland rice fields по Alimagno, Bonifacio Villanueva 1947-

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  7. 7

    Nitrogen-potassium ratios in relation to nutrient content and yield of cotton по Aragon, Miguel L. 1949-

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  8. 8

    Nitrogen fixation by Rhizobiun-legume association and in the rhizosphere of monocotyledonous plants по Alcantara, Antonio Javina 1947-

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  9. 9

    The effect of rate and timing of nitrogen application with and without phosphorous on the performance of rice in Maapag clay loam по Melodia, Fortunato S. 1931-

    Опубликовано 1966
    Диссертация


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  10. 10

    Nitrogen availability in five soils under different management systems and its effects on growth and yield of rice по Briones, Angelina (Mariano) 1939-

    Опубликовано 1966
    Диссертация


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