Osner, Karl Publication year: 2007 Source publication information Journal Title: Particpatory learning and action Volume: No 57 Pages: p 128-132 Publisher IIED IIED, 3 Endsleigh Street, London WC1H 0DD, Tel: +44 (0) 20 7388 2117, fax: +44 (0) 20 7388 2826 London http://www.iied.org Publisher reference: International Institute for Environment and Development