F eature Report 19
25 21 20
F eature Report Mitsch
27 1900 1950 1990 1938 1951 bioengineering eco-hydraulic engineering 1962 1971 1983 ecotechnology
F eature Report 1989 1987
29 2006 2008 7 7 2 1 2004 10
F eature Report
31 Milbrath, L.W. 1994 Envisioning A Sustainable Society Hawken P., A. Lovins and L. H. Lovins 2003 Natural Capitalism Colborn T., D. Dumanoski and J.P. Myers 1999 Our Stolen Future 2003