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Brenner, D.J., Krieg, N.R. & Staley, J.T.
2005. Volume Two. The Proteobacteria. Part A. Introductory Essays. In G.M. Garrity (ed.), Bergey's Manual of Systematic Bacteriology, Second Edition. Springer-Verlag, New York: [i]-xxvi, 1-304.
Chapters
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Garrity, G.M., Bell, J.A. & Lilburn, T., 2005.
The Revised Road Map to the Manual: 159-220.