Detail
Type D. mit Rg. - Eyssel is a D. mit Rg.
Kr Verden Aller - The Kreis for Eyssel is Verden Aller. A Kreis is a government district (similar to a U.S. county).
See Eissel - A See notation means the entry is dependent on another entry. In this case, Eyssel is dependent on Eissel, which should be consulted for additional information.