- Cities and towns--Germany--History--Congresses (6)
- 地理.地誌.紀行--ヨーロッパ (6)
- Art patronage--Europe--History--Congresses (1)
- Catolic Church--Relations (diplomatic)--Europe--Congresses (1)
- Cities and towns--Europe--History--Congress (1)
- Cities and towns--Europe--History--Congresses (1)
- Cities and towns--Europe--Religious aspects--Catholic Church--Congresses (1)
- Cities and towns--Germany--Growth--History--Congresses (1)
- Cities and towns--Germany--History (1)
- Europe--Church history--Congresses (1)
- Gardens--Germany--History--Congresses (1)
- Germany--Commerce--History--Congresses (1)
- Germany--History--Congresses (1)
- Law--Germany--History--Congresses (1)
- Medical care--Germany (West)--History--Congresses (1)
- Medical care--Hungary--History--Congresses (1)
- Medical care--Switzerland--History--Congresses (1)
- Municipal government--Germany--History--Congresses (1)
- Parks--Germany--History--Congresses (1)
- Revolutions--Germany--History--Congresses (1)
- Urban beautification--Germany--History--Congresses (1)
- Urban forestry--Germany--History--Congresses (1)
- Urban health--Germany (West)--History--Congresses (1)
- Urban health--Hungary--History--Congresses (1)
- Urban health--Switzerland--History--Congresses (1)