- 1821
- 1977-06-14
technology: تجارب هندسية
- 1813
- 1977-06-06
- 1802
- 1977-05-26
- 1784
- 1977-05-08
- 1782
- 1977-05-06
- 1771
- 1977-04-25
- 1759
- 1977-04-13
- 1751
- 1977-04-05
- 1553
- 1976-09-12
- 1540
- 1976-08-30
- 1531
- 1976-08-21
- 1266
- 1975-11-27
- 1118
- 1975-07-01
- 1093
- 1975-06-06
- 627
- 1974-02-20
- 250
- 1972-12-13