Columbia subject headings:
Graber Pulver Architekten.
Power-plants--Environmental aspects--Switzerland.
Power-plants--Switzerland--Bern--Design and construction.
Harvard subject headings:
Graber Pulver Architeken.
Power-plants--Switzerland--Bern--Design and construction.
Power-plants--Switzerland--Environmental aspects.
Princeton subject headings:
Architecture, Industrial--Switzerland--Bern.
Architecture--Switzerland--Bern--History.
Bern (Switzerland)--Buildings, structures, etc.
Power-plants--Switzerland--Bern--Design and construction.
Sustainable architecture--Switzerland--Bern.