- 1831
- 1977-06-24
science: الكيمياء
- 1779
- 1977-05-03
- 1757
- 1977-04-11
- 1729
- 1977-03-14
- 1721
- 1977-03-06
- 1701
- 1977-02-12
- 1696
- 1977-02-07
- 1643
- 1976-12-14
- 1618
- 1976-11-17
- 1594
- 1976-10-24
- 1520
- 1976-08-10
- 1476
- 1976-06-27
- 1458
- 1976-06-09
- 1412
- 1976-04-24
- 1388
- 1976-03-31
- 1385
- 1976-03-28
- 1331
- 1976-02-02
- 1319
- 1976-01-21
- 1318
- 1976-01-20
- 1316
- 1976-01-18