Haku
Viitteet 1-2 / 2
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)