1. Ecology of Soil-Borne Plant Pathogens. Prelude to biological control;Baker,1965
2. Microbial colonization of roots;Bowen;Ann. Rev. Phytopath.,1976
3. Rhizosphere micro-organisms — opportunists, bandits or benefactors;Brown,1975
4. Legume root nodule initiation and development;Dart,1975
5. Non-symbiotic nitrogen fixation in soil;Dart,1975