Columbia subject headings:
Harvard subject headings:
Food habits--Health aspects--Germany--History--20th century.
Food habits--Health aspects--Germany--History--21st century.
Food--Quality--Germany--History--20th century.
Food--Quality--Germany--History--21st century.
Nutrition--Germany--History--20th century.
Nutrition--Germany--History--21st century.
Princeton subject headings:
Food habits--History.
Food--Social aspects.