TY - GEN AU - Ashraf Latif Tadross AU - Ans Ibrahim Osman , AU - Mohamed AbdElsalam Marie , AU - W.Pfau , TI - Photometric and statistical studies of open clusters' properties using CCD - observations / PY - 2000/// CY - Cairo : PB - Ashraf Latif Tadross , KW - CCD - observations KW - Open clusters' properties N1 - Thesis (Ph.D.) - Cairo University - Faculty Of Science - Department Of Astronomy and Meteorology UR - http://172.23.153.220/th.pdf ER -