- 1747
- 1977-04-01
technology: الطاقة الشمسية
- 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
- 1548
- 1976-09-07
- 1541
- 1976-08-31
- 1532
- 1976-08-22
- 1531
- 1976-08-21
- 1523
- 1976-08-13
- 1462
- 1976-06-13
- 1424
- 1976-05-06
- 1407
- 1976-04-19
- 1386
- 1976-03-29
- 1358
- 1976-03-01
- 1327
- 1976-01-29