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21
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22
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Soil resources and rice demand of Metropolitan Manila, its surrounding cities and municipalities [microform]
Published 1981Visual Material -
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The uptake and translocation of phosphorus by rice (Oryza sativa L.) under soil moisture stress [microform].
Published 1980Visual Material -
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Effect of the degree and length of slope on soil loss and runoff [microform]
Published 1979Visual Material -
27
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Water retention and transmission characteristics of some soils in the Bicol river basin [microform]
Published 1978Visual Material -
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