Antagonistic rhizoplane bacteria and their effects on the symbiosis between Trifolium repens L. and Rhizobium trifolii Dangeard by Hattingh, M. J.(Marthinus Johannes)

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The antagonistic effects of soil micro-organisms, isolated from the root region of clovers, on the colver root nodule bacteria (Rhizobium trifolii Dangeard) by Hattingh, M. J.(Marthinus Johannes)

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Leerlinge se betekenistoekenning aan negatiewe getalle nadat hulle daaraan bekend gestel is na analogie van die temperatuurskaal by Hattingh, M. J.(Marthinus Jacobus)

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Phytophthora cinnamomi root rot of grapevines in South Africa by Marais, Pierre Guillaume

Other Authors: “…Hattingh, M. J.…”
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