Haku
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Effect of different rates of P fertilization on the yield and P status of the soil in two long-term field experiments
(Suomen maataloustieteellinen seura, 1989)
Effect of extractant pH on the release of soil phosphorus, aluminium and iron by ammonium fluoride
(Suomen maataloustieteellinen seura, 1989)
Dependence of the phosphate sorption capacity on the aluminium and iron in Finnish soils
(Suomen maataloustieteellinen seura, 1963)