Detail
Type Ml. - Untermühle is a Mühle (Mill).
Kr Rotenburg Hessen-N. - The Kreis for Untermühle is Rotenburg Hessen-N. A Kreis is a government district (similar to a U.S. county).
See Breitau - A See notation means the entry is dependent on another entry. In this case, Untermühle is dependent on Breitau, which should be consulted for additional information.