- 2396
- 1979-01-19
technology: تحلية المياه
- 2335
- 1978-11-19
- 2309
- 1978-10-23
- 2195
- 1978-06-30
- 2160
- 1978-05-23
- 2157
- 1978-05-20
- 2134
- 1978-04-27
- 1811
- 1977-06-04
- 1803
- 1977-05-27
- 1800
- 1977-05-24
- 1750
- 1977-04-04
- 1687
- 1977-01-29
- 1647
- 1976-12-18
- 1029
- 1975-04-03
- 1014
- 1975-03-19
- 138
- 1972-07-31