US5578486-A  Anderstam, B., et al., "Studies of Possible Genetic Effects in Bacteria of High Frequency Electromagnetic Fields," Hereditas 98:11-32 (1983).;  Babu, C. R., et al., "Biological Nitrogen Fixation Technologies for Ecological Rehabilitation of Degraded Soils and Natural Ecosystems," Proc. Indian Natn. Sci. Acad., B59 (3)(4):359-366 (1993).;  Bhanavase, D. B., et al., "Nodulation and Nitrogen Fixation as Influenced by Micronutrients-A Review," J. Maharashtra Agric Univ, 18(2):167-174 (1993).;  Bohlool, B. B., et al., "Biological Nitrogen Fixation for Sustainable Agriculture: A Perspective." Plant and Soil, 141:1-11 (1992).;  Fisk, H., et al., "Direct Gene Transfer Technology and Progress: The Introduction and Expression of Transgenes in Plants," Scientia Horticulturae 55:5-36 (1993).;  Gallon, J. R., "Tansley Review No. 44, Reconciling the Incompatible: N2 Fixation and O2", New Phytol. 122:571-609 (1992).;  Gaur, Y. D., "Microbiology, Physiology and Agronomy of Nitrogen Fixation: Legume-Rhizobium Symbiosis," Proc. Indian Natn. Sci. Acad., B59 (3)(4):333-358 (1993).;  Gilland, B., "Cereals, Nitrogen and Population: An Assessment of the Global Trends," Endeavour, New Series,, 17(2):pp. 84-88 (1993).;  Hamnerius, Y., "Exposure Systems for Studies of the Effects of Electromagnetic Fields on Biological Systems," Hereditas 98:43-59 (1983).;  Lau-Wong, M. M., "Field Testing of the Effectiveness of Bacterial Fertilizer in Nepal," Agriculture, Ecosystems and Environment 19:145-153 (1987).;  Lin, Lung-Shen, et al., "Isolation of Restriction Deficient Mutant for Corynebacterium Glutamicum by Electroporation," Biotechnology Techniques 7(11) 823-626 (1993).;  Mba, C. C., "Field Studies on Two Rock Phosphate Solubiizing Actinomycete Isolates as Biofertilizewr Sources," Environmental Manager, 17(2):263-269 (1994).;  Obeng-Asamoa, E. K., et al., "Periphyton i the Volta Lake. I. Seasonal Changes on the Trunks of Flooded Trees," Hydrobiologia 76:191-200 (1980).;  Oertli, J. J., "Controlled-Release Fertilizers," Fertilizer Research 1:103-123 (1980).;  Rosado, A., et al., "Optimization of Electroporation Procedure to Transform B. polymyxa SCE2 and other Nitrogen-Fixing Bacillus," Journal of Microbiological Methods, 19:1-11 (1994).;  Segal, Wm., et al., "Extent of Regeneration of the Microbial Community in Reclaimed Spent Oil Shale Land," J. Environ. Qual. 16(1), pp. 44-48 (1987).;  Tigerstedt, P. M. A., "Genetic Adaptation of Plants in the Subartic Environment," Holacrctic Ecology 2:264-268 Copenhagen (1979).