Detail
Type D. - Rath is a Dorf (Village).
Kr Erkelenz - The Kreis for Rath is Erkelenz. A Kreis is a government district (similar to a U.S. county).
See Beeck 1) B. Aachen - A See notation means the entry is dependent on another entry. In this case, Rath is dependent on Beeck 1) B. Aachen, which should be consulted for additional information.