- 6027
- 1989-02-20
education: الأبحاث العلمية
- 5994
- 1989-01-18
- 5976
- 1988-12-30
- 5940
- 1988-11-24
- 5936
- 1988-11-20
- 5925
- 1988-11-09
- 5911
- 1988-10-26
- 5696
- 1988-03-22
- 5682
- 1988-03-08
- 5679
- 1988-03-05
- 5659
- 1988-02-13
- 5556
- 1987-10-31
- 5545
- 1987-10-20
- 5484
- 1987-08-19
- 5453
- 1987-07-18
- 5345
- 1987-03-31
- 5273
- 1987-01-16
- 5245
- 1986-12-18
- 5234
- 1986-12-07
- 5165
- 1986-09-28