- 6278
- 1989-10-31
education: البحث الأكاديمي
- 6087
- 1989-04-21
- 6078
- 1989-04-12
- 5977
- 1988-12-31
- 5849
- 1988-08-25
- 5765
- 1988-05-31
- 5702
- 1988-03-28
- 5637
- 1988-01-22
- 5614
- 1987-12-29
- 5334
- 1987-03-19
- 5255
- 1986-12-28
- 5238
- 1986-12-11
- 5169
- 1986-10-02
- 5142
- 1986-09-04
- 5085
- 1986-07-07
- 4885
- 1985-12-17
- 4870
- 1985-12-02
- 4853
- 1985-11-15
- 4834
- 1985-10-27
- 4550
- 1985-01-13