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  1. 471

    Microbiological transformations of nitrogen in flooded maahas clay [microform] by Manguiat, Ireneo Javier 1945-

    Published 1977
    Visual Material

    Microbiological transformations of nitrogen in flooded maahas clay [microform]
  2. 472

    Some factors affecting the availability of zinc in rice soils [microform] by Annapantula, Bhadrachalam 1938-

    Published 1977
    Visual Material

    Some factors affecting the availability of zinc in rice soils [microform]
  3. 473

    Distribution of the forms of nitrogen in some Philippine soils [microform] by Caramancion, Maria Nylda Villena 1945-

    Published 1977
    Visual Material

    Distribution of the forms of nitrogen in some Philippine soils [microform]
  4. 474

    Studies on sulfur nutrition of rice plant [microform] by Chaudhry, Muhammad Rashid 1941-

    Published 1977
    Visual Material

    Studies on sulfur nutrition of rice plant [microform]
  5. 475

    Some characteristics of eight major soil series from the Visayan islands, Philippines and their potassium status [microform] by Magat, Severino S. 1946-

    Published 1977
    Visual Material

    Some characteristics of eight major soil series from the Visayan islands, Philippines and their potassium status [microform]
  6. 476

    Sulfur availability to rice plants and its transfoemation in rice soil and rhizosphere [microform] by Han, Kang Wan 1941-

    Published 1977
    Visual Material

    Sulfur availability to rice plants and its transfoemation in rice soil and rhizosphere [microform]
  7. 477

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

    Published 1977
    Visual Material

    In situ determination of biological nitrogen fixation by blue-green algae in lowland rice fields [microform].
  8. 478

    Release of potassium and magnesium from some Philippine soils [microform] by Tantidhanapat, Prapat 1948-

    Published 1977
    Visual Material

    Release of potassium and magnesium from some Philippine soils [microform]
  9. 479

    The phosphate supply pattern of some Philippine soils with high and low phosphorus contents [microform]. by Malik, Muhammad Bashir 1935-

    Published 1977
    Visual Material

    The phosphate supply pattern of some Philippine soils with high and low phosphorus contents [microform].
  10. 480

    Availability of inorganic phosphorus fractions and organic phosphorus accumulation in rice soils [microform]. by Singlachar, Mandayam Ammanji 1940-

    Published 1977
    Visual Material

    Availability of inorganic phosphorus fractions and organic phosphorus accumulation in rice soils [microform].

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