TY  - GEN
AU  - Ahmed Ibrahim Ibrahim Osman
AU  - Samir Nawar Abdelshahid , 
AU  - Zein Elabdin Metwally , 
TI  - The artificial night sky glow at kottamia observatory / 
PY  - 1996///
CY  - Cairo : 
PB  - Ahmed Ibrahim Ibrahim Osman , 
N1  - Thesis(M.Sc.) - Cairo University - Faculty of Science - Department of Astronomy and Meteorology
ER  -