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  1. 31
    Izdano 2003
    Knjiga

    State of the Philippine land and soil resources 2003
  2. 32
    od Day, Robert W.
    Izdano 2001
    Knjiga

    Soil testing manual procedures, classification data, and sampling practices
  3. 33
    od Ganga, Zenaida N.
    Izdano 2001
    Knjiga

    Improving sweet potato production and utilization in Sagada, Mt. Province
  4. 34
    od Jones, J. Benton 1930-
    Izdano 2001
    Knjiga

    Laboratory guide for conducting soil tests and plant analysis
  5. 35
    od Liu, Cheng
    Izdano 2000
    Knjiga

    Soil properties testing, measurement, and evaluation
  6. 36
    Izdano 2000
    Knjiga

    Trace elements in soil bioavailability, flux, and transfer
  7. 37
    od Pierzynski, Gary M.
    Izdano 2000
    Knjiga

    Soils and environmental quality
  8. 38
    od Brady, Nyle C.
    Izdano 1999
    Knjiga

    The nature and properties of soils
  9. 39
    od Rood, Steven
    Izdano 1999
    Knjiga

    Bio-physical effects of land use conversion in Paoay and Mount Data.
  10. 40
    Knjiga

    Soil physico-chemical characteristics in a secondary succession
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