Columbia subject headings:
Dwellings--Environmental engineering--Competitions--Washington (D.C.)
Ecological houses--Design and construction--Competitions--Washington (D.C.)
Solar houses--Design and construction--Awards--Germany--Darmstadt.
Solar houses--Design and construction--Competitions--Washington (D.C.)
Technische Universität Darmstadt. Fachbereich Architektur--Awards.
Harvard subject headings:
Architecture and solar radiation.
Group work in architecture--Germany.
Solar buildings--Awards.
Solar houses--Competitions.
Princeton subject headings: