1. Contribution to the autoecology of Ononis vaginalis;Abd El-Rahman;Phyton (Austria),1967
2. Multivariate analysis of vegetational variation in different habitats at Omayed, Egypt;Abdel-Razik;Vegetatio,1984
3. Chemical Analysis of Ecological Materials;Allen,1974
4. Phytosociological and ecological study of a sector in the Libyan desert;Batanouny;Vegetatio,1972
5. Elhaak, M. A. 1986, Water economy and productivity of some native and introduced fodder plant species of the western Mediterranean coast of Egypt, Faculty of Science, Tanta University, Tanta, Egypt