Klessa, D. A. Sinclair, Alex H. Speirs, R. B. Magnesium in soils and crops - Perth : Scottish Agricultural Colleges (SAC), 1990 - SAC Technical Note, No. TN92 SAC Fertiliser Series, No. 18 . ISBN: 1854821830 Subjects--Topical Terms: FertilizersMagnesium fertilizersSoils