1. Studies in the differentiation between human and animal pollution by means of faecal streptococci;Cooper;J. Gen. Microbiol.,1955
2. Studies on the coli-aerogenes group in Nile water prior to High-Dam reservation;El-Abagy,1971
3. Bacterial density in Nile water (1963–1965);Ramadan,1976
4. Early changes in bacterial quality of Nile water (1966–1973);Ramadan,1976
5. Coliforms of Nile water (1965–1966);Ramadan,1976