Columbia subject headings:
Dwellings--Energy conservation--Designs and plans.
Ecological houses--Designs and plans.
Small houses--Designs and plans.
Sustainable architecture--Designs and plans.
Harvard subject headings:
Dwellings--Energy conservation--Designs and plans.
Ecological houses--Designs and plans.
Small houses--Designs and plans.
Sustainable architecture--Designs and plans.
Princeton subject headings:
Dwellings--Energy conservation--Designs and plans.
Ecological houses--Designs and plans.
Small houses--Designs and plans.
Sustainable architecture--Designs and plans.