1. Allen O N and Allen E K 1981 The Leguminosae. Univ. Wisconsin Press, WI, USA.
2. Babu C R, Jha P K and Nair S 1990 Biological reclamation of derelict ecosystems: problems and prospects. In Environmental management of mining operations. Ed. B BDhar. pp 327?336. Ashish Publ., New Delhi, India.
3. Babu C R, Subramaniam B, Nair S, Jha P K, Bhattacharya A, Kishore L and Natrajan K 1993 Biological nitrogen fixation technologies for ecological rehabilitation of degraded soils and natural ecosystems. Proc. Ind. Natl. Sci. Acad. B59, 359?366.
4. Bloomfield H E, Handley J F and Bradshaw A D 1982 Nutrient deficiencies and the aftercare of reclaimed derelict land. J. Appl. Ecol. 19, 151?158.
5. Bradshaw A D 1983 The reconstruction of ecosystems. J. Appl. Ecol. 20, 1?17.