- 2291
- 1978-10-05
education: بحث علمي
- 2257
- 1978-08-31
- 2040
- 1978-01-23
- 2032
- 1978-01-15
- 2031
- 1978-01-14
- 2029
- 1978-01-12
- 2023
- 1978-01-06
- 2011
- 1977-12-25
- 1979
- 1977-11-22
- 1977
- 1977-11-20
- 1920
- 1977-09-24
- 1115
- 1975-06-28
- 1101
- 1975-06-14
- 1046
- 1975-04-20
- 1010
- 1975-03-15