1. Benson, H.J. 1990 Microbiological Applications: a Laboratory Manual in General Microbiology. USA: W.C. Brown.
2. Burton Jr, G.A., Gunnison, D. & Lanza, G.R. 1987 Survival of pathogenic bacteria in various fresh water sediments. Applied and Environmental Microbiology 53, 633?638.
3. Crook, R.J., Weller, D.M. & Thomashow, L.S. 1987 Enhancement of root health and plant growth by rhizobacteria. In Molecular Strategies for Crop Protection, eds Arntzen, C.J. & Ryan, C. pp. 125?134. New York: Alan R. Liss.
4. Dube, H.C. & Podile, A.R. 1989 Biological control of microbial plant pathogens. Indian Review of Life Sciences 9, 15?30.
5. Loper, J.E., Haack, C. & Schroth, M.N. 1985 Population dynamics of soil pseudomonads in rhizosphere of potato (Solanum tuberosum L.). Applied and Environmental Microbiology 49, 416?422.