Hussen Ahmed Principles of environmental economics and sustainability An integrated economic and ecologoical approach. - 3rd - London Routledge 2013 - xxii,417p cm. ISBN: 3872.8796000000002 Standard No.: 117952 Source: 233, 06/11/2012, Classic Book Service Textual Subjects--Topical Terms: Business Economics Dewey Class. No.: X:(G:55), Q3