Columbia subject headings:
Harvard subject headings:
Coastal zone management--Germany--Mecklenburg-Vorpommern--History--Congresses.
Nature conservation--Germany--Mecklenburg-Vorpommern--Congresses.
Water resources development--Germany--Mecklenburg-Vorpommern--History--Congresses.
Water-supply--Germany--Mecklenburg-Vorpommern--Management--Congresses.
Waterways--Germany--Mecklenburg-Vorpommern--Congresses.
Princeton subject headings:
Water-supply--Germany--Mecklenburg-Vorpommern--History--Congresses.