Detail
Type Gut - Ruheleben is a Gut (Estate).
Kr Plön - The Kreis for Ruheleben is Plön. A Kreis is a government district (similar to a U.S. county).
See Bösdorf - A See notation means the entry is dependent on another entry. In this case, Ruheleben is dependent on Bösdorf, which should be consulted for additional information.