Author = Esam Rizkalla
Comparative study for the production of the male Nile tilapia between inter-specific hybridization and hormonal sex reversal

Volume 17, Issue 2, March and April 2013, Pages 73-89

Nabil Abd Al-Hakim; Mohsen Hessen; Esam Rizkalla; Ahmed Hegazi; Al-Azab Tahoun; Ayman Khalfalla


COMPARATIVE STUDY ON SOME HISTOLOGICAL AND BIOCHEMICAL ASPECTS IN FISHES FROM QARUN AND BARDAWIL LAKES

Volume 8, Issue 4, September and October 2004, Pages 1-35

Hunan Gaber; Esam Rizkalla; Basem Fahmy


EFFECT OF CLOSTRIDIUM PERFRINGENS INFECTION ON SOME BIOCHEMICAL, PHYSIOLOGICAL AND PATHOLOGICAL PARAMETERS IN OREOCHROMIS NILOTICUS

Volume 8, Issue 4, September and October 2004, Pages 53-84

Esam Rizkalla; Addel Shalaby; Ahmad Ashram; Afaf Yanni


COMPARATIVE STUDY OF SOME ANTIBIOTICS ON BIOCHEMICAL CHANGES IN PLASMA OF THE SHARPTOOTH CATFISH CLARIAS GARIEPINUS.

Volume 7, Issue 4, September and October 2003, Pages 381-402

Esam Rizkalla; Basem Fahmy; Hany Zaghlou; Salah El-Din El-Sadek