Columbia subject headings:
Harvard subject headings:
Conservation of natural resources--Switzerland--History.
Science--Switzerland--Societies, etc.--History.
St. Gallische Naturwissenschaftliche Gesellschaft (Switzerland)--History.
Sustainable development--Switzerland--History.
Princeton subject headings:
Conservation of natural resources--Switzerland--History.
Science--Switzerland--Societies, etc.--History.
St. Gallische Naturwissenschaftliche Gesellschaft (Switzerland)--History.
Sustainable development--Switzerland--History.