TY  - BOOK
AU  - Hosam Ahmed Mohamed Ismail El Sabbagh ,
AU  - Magdy Fikry Mohamed
AU  - Amr Badawi Mahmoud
TI  - Shgnalling system number seven in egypt / 
PY  - 1994///
KW  - Shgnalling system number seven in egypt
N1  -   Thesis (M.Sc.) -Cairo University, 1994; Bibliography: pages 149 : 151
ER  -