Yemen

Housing may be the Third World's most intractable problem, but mud, adobe, earth-bricks, soil-cement and other traditional building materials are cheap, readily available and can be made and used by the poor people themselves to build their own homes. Today, mud perhaps offers the only practical prospect for building the millions of houses which will be needed over the next twenty years. 

The seabed of South Yemen has a beautiful abundance of corals. This field guide presents information on the identification for each species, as well as information on their ecology and distribution. The text is accompanied by numerous photographs.