Αποτελέσματα αναζήτησης - "Phosphorus content"
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Availability of inorganic phosphorus fractions and organic phosphorus accumulation in rice soils [microform].
Έκδοση 1977Visual Material -
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Evaluation and correlation on selected phosphorous soil test methods for paddy soils [microform]
Έκδοση 1976Visual Material -
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Availability and transformationa of phosphorus fertilizers in submerged and non-submerged soils [microform]
Έκδοση 1967Visual Material -
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The phosphate supply pattern of some Philippine soils with high and low phosphorus contents [microform].
Έκδοση 1977Visual Material