1. Tillage improves the development of Acacia senegal and Prosopis chilensis seedlings on sandy soils in Central Sudan;Alatalo;Sudan Silva,1989
2. Climatological Normals 1951–1980;Anonymus,1980
3. Casuarinas: Nitrogen-fixing trees for adverse sites;Anonymus,1984
4. Studies on the native nodulation and biomass production of some tree legumes;Balasundaram;Indian J. For.,1987
5. Studies on tree legumes: Nodulation pattern and characterization of the symbiont;Basak;Ann. Arid Zone,1975