1. Farmers of Forty Centuries or, Permanent Agriculture in China, Korea and Japan;King,1990
2. Historical aspect of wastewater treatment;Cooper,2001
3. Conservation of Water Environment and Domestic Wastewater Treatment;Kawamura,1998
4. Concrete and Clay: Reworking Nature in New York City;Gandy,2003
5. Environmental protection technologies for sustainable development;Lettings,2001