UdG users
1951-11-01 Letter
1951-12-17 Letter
1952-10-16 Letter
1952-12-16 Letter
1953-10-10 Letter
1953-10-24 Letter
1953-11-16 Letter
1954-02-12 Carta
1954-02-16 Letter
1954-04-24 Letter
1954-05-28 Letter
1955-08-06 Letter
1955-11-10 Letter