- 2728
- 1979-12-20
education: البحث العلمي
- 2726
- 1979-12-18
- 2725
- 1979-12-17
- 2719
- 1979-12-11
- 2716
- 1979-12-08
- 2714
- 1979-12-06
- 2712
- 1979-12-04
- 2706
- 1979-11-28
- 2703
- 1979-11-25
- 2672
- 1979-10-23
- 2666
- 1979-10-17
- 2655
- 1979-10-06
- 2652
- 1979-10-03
- 2638
- 1979-09-19
- 2636
- 1979-09-17
- 2632
- 1979-09-13
- 2615
- 1979-08-27
- 2593
- 1979-08-04
- 2590
- 1979-08-01
- 2584
- 1979-07-26