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  1. 21
    Published 1960
    Book

    Soil and land classification.
  2. 22
    by Barrera, Alfredo
    Published 1960
    Book

    The soil around us
  3. 23
    by Reyes, Edilberto D
    Published 1959
    Book

    Lysimeter studies on a Lipa day loam grown to paddy rice I, Leaching losses of some soil constituents
  4. 24
    Published 1948
    Book

    Soil survey of Laguna province, Philippines
  5. 25
    by Cox, Alvin Joseph 1875-
    Published 1911
    Book

    Philippine soils and some of the factors which influence them
  6. 26
    Book

    A study of the relationship between soil and quantitative terrain factors
  7. 27
    Book

    The Philippines recommends for soil fertility management Los Banos, Laguna Philippine Council for Agriculture, Forestry and Natural Resources Research and Development
  8. 28
    Book

    An experimental study of the radiometric determination of potassium content of soils and minerals
  9. 29
    Book

    Soils of Cagayan, Isabela, Negros Occidental, and Nueva Vizcaya.
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