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  1. 1
    Book

    The Philippines recommends for small water impounding projects.
  2. 2
    by Hansen, Vaughn E.
    Published 1980
    Book

    Irrigation principles and practices
  3. 3
    Published 1978
    Book

    The Philippines recommnds for irrigation water management lowland rice conditions.
  4. 4
    by Cantor, Leonard Martin
    Published 1967
    Book

    A world geography of irrigation
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