1. Buchanan, R. E. and Gibbons, N. E. (eds.): 1975, Bergey's Manual of Determinative Bacteriology, 8 ed., Williams and Wilkins, Co., Baltimore.
2. Burke, V., Robinson, J., Gracey, M., Peterson, D., Meyer, N., and Haley, V.: 1984a, Appl. Environ. Microbial.
48, 367.
3. Burke, V., Robinson, J., Gracey, M., Peterson, O., and Partridge, K.: 1984b, Appl. Environ. Microbial.
48, 361.
4. Cavari, B. Z., Allen, D., and Colwell, R.: 1981, Appl. Environ. Microbial.
41, 1052.
5. Davis, J. C.: 1973, Statistics and Data Analysis in Geology, John Wiley and Sons, Inc., New York.