UdG users
1982-05-01 Letter
1982-07-12 Letter
1982-09-18 Letter
1986-03-31 Letter
1986-06-30 Letter
1986-10-14 Letter
1986-11-11 Letter
1987-01-18 Letter
1987-09-29 Letter
1988-01-25 Letter
1988-02-06 Letter
1988-06-06 Letter
1989-01-24 Letter
1989-02-26 Letter