- 1807
- 1977-05-31
science: البحث العلمي
- 1793
- 1977-05-17
- 1765
- 1977-04-19
- 1752
- 1977-04-06
- 1749
- 1977-04-03
- 1710
- 1977-02-21
- 1667
- 1977-01-09
- 1635
- 1976-12-06
- 1632
- 1976-12-01
- 1610
- 1976-11-09
- 1604
- 1976-11-03
- 1577
- 1976-10-07
- 1565
- 1976-09-24
- 1526
- 1976-08-16
- 1524
- 1976-08-14
- 1513
- 1976-08-03
- 1504
- 1976-07-25
- 1500
- 1976-07-21
- 1498
- 1976-07-19
- 1490
- 1976-07-11