D. G. A. El-Hassan

Subclinical infection of paratuberculosis among camels in Egypt

A. El-Sayed, M. Salem, A. Fayed, 2012 .

Study on β-haemolyticstreptococci I nfection in Equines at D ifferent S easons and A ges

A. El-Molla, O. Mohamed, D. G. A. El-Hassan, 2022 .

Epidemiological studies on Escherichia coli O157:H7 in Egyptian sheep

A. El-Sayed, M. Kamel, D. G. A. El-Hassan, 2015, Tropical Animal Health and Production.