UdG users
1979-10-10 Letter
1979-10-08 Letter
1979-09-18 Letter
1979-08-24 Letter
1979-08-17 Letter
1979-04-04 Letter
1979-03-14 Letter
1978-11-22 Letter
1978-11-17 Letter
1978-08-14 Letter
1978-07-31 Letter
1978-06-28 Letter
1978-05-23 Letter
1978-05-11 Letter
1977-02-02 Letter
1976-07-27 Letter
1976-06-22 Letter
1976-06-02 Letter
1976-03-05 Letter
1976-01-10 Letter
1975-11-28 Letter
1975-10-21 Letter
1975-10-14 Letter
1975-08-21 Letter