The clover root-nodule bacteria (Rhizobium trifolii Dangeard) in soils of the Stellenbosch district by Scheffler, J. G.(Jacobus Gideon)

Subjects: “…Soilborne plant diseases -- South Africa -- Stellenbosch…”
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An investigation of soilborne fungi associated with roots and crowns of nursery grapevines by Van Coller, Gerhardus J. (Gerhardus Johannes)

Subjects: “…Soilborne plant diseases -- South Africa -- Western Cape…”
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