@book{6231, author = {El-Kafrawy, Mohsen El-Shafey Sadek.}, title = {Study of hepatitis B markers as indicators for the prevalence of hepatitis B viral infection among infants and children in Kaliobiya Governorate /}, year = {1987.}, address = { }, note = {Supervisor : Yassin Abdel Ghaffar, Ahmed Abdel-Meneim Khashaba, Momena Kamel, Abdel-Rahman El-Saadani.} }