1. The Prodigious Builders;Rudofsky,1977
2. Energy conservation by building underground;Bligh;Underground Space,1967
3. An essay—frequently asked questions on earth-sheltered housing;Lane;Underground Space,1979
4. Underground architecture;Baggs;Architecture Australia,1978
5. The dugout dwellings of an outback opal mining town in Australia;Baggs,1978