1. Allen, O.N. and Allen, E.K., 1981. The Leguminosae. University of Wisconsin Press. Macmillan, Madison, London.
2. Aronson, J., Ovalle, C. and Avendano, J., 1992. Early growth rate and nitrogen fixation potential in 44 legume species grown in two soil types in central Chile. Forest Ecology Management, 47: 225–44.
3. Arsac, J.F. and Cleyet-Marel, J.C., 1985. Serological and ecological studies ofRhizobium spp. (Cicer arietinum) by immunofluorescence and ELISA technique: Competitive ability for nodule formation between Rhizobium strains. Plant and Soil, 94: 411–423.
4. Barnet, Y., Catt, P.C., Jenjaroentham R. and Mann, K., 1993. Fast-growing root-nodule bacteria from Australian Acacia spp. In: New Horizons in Nitrogen Fixation (eds. Palacios, R., Moira, J. and Newton, W.E.) Kluwer Academic Publishers, Dordrecht.
5. Beck, D.P., 1992. Yield and nitrogen fixation of Chickpea cultivars in response to inoculation with selected rhizobial strains. Agronomy Journal, 84: 510–6.