- 1929
- 1977-10-03
technology: الطاقة الشمسية
- 1895
- 1977-08-28
- 1894
- 1977-08-27
- 1859
- 1977-07-23
- 1857
- 1977-07-21
- 1811
- 1977-06-04
- 1754
- 1977-04-08
- 1751
- 1977-04-05
- 1750
- 1977-04-04
- 1749
- 1977-04-03
- 1748
- 1977-04-02
- 1747
- 1977-04-01
- 1742
- 1977-03-27
- 1730
- 1977-03-15
- 1708
- 1977-02-19
- 1693
- 1977-02-04
- 1639
- 1976-12-10
- 1585
- 1976-10-15
- 1580
- 1976-10-10
- 1577
- 1976-10-07