Não informado. (1937). Soils and Fertilizers: Abstracts of world literature. Commonwealth Agricultural Bureau.
Chicago-viite (17. p.)Não informado. Soils and Fertilizers: Abstracts of World Literature. Farnham Royal, Inglaterra: Commonwealth Agricultural Bureau, 1937.
MLA-viite (8. p.)Não informado. Soils and Fertilizers: Abstracts of World Literature. Commonwealth Agricultural Bureau, 1937.
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