Search Results - Mariano, Juan A.

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  1. 1

    Soil survey of Davao province, Philippines

    Published 1953
    Book


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  2. 2

    Classification of volcanic ash soils

    Published 1964
    Book


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  3. 3

    Soil survey of Davao province, Philippines

    Published 1953
    Book


    Cover Image
  4. 4

    Soil survey of Ilocos Sur Province, Philippines

    Published 1954
    Book


    Cover Image

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