UdG users
1988-03-18 Letter
1982-02-13 Letter
1981-10-05 Letter
1980-11-30 Letter
1980-08-14 Letter
1980-05-30 Letter
1980-01-01 Letter
1978-03-01 Letter
1977-11-18 Letter
1977-09-20 Letter
1975-03-25 Letter
1970-08-06 Letter