- 3861
- 1983-02-11
education: الأبحاث العلمية
- 3578
- 1982-04-29
- 3475
- 1982-01-14
- 3472
- 1982-01-11
- 3254
- 1981-06-03
- 3203
- 1981-04-13
- 3093
- 1980-12-22
- 3008
- 1980-08-28
- 2911
- 1980-06-22
- 2716
- 1979-12-08
- 2711
- 1979-12-03
- 2596
- 1979-08-07
- 2509
- 1979-05-12
- 2307
- 1978-10-21
- 2003
- 1977-12-17
- 1974
- 1977-11-17