Bio and more...

• Biovision.ch
• swissaid.ch
• SKAT, Swiss Centre for Development Cooperation in Technology and Management, Vadianstrasse 42, St.Gallen, ++41 71 237 475
• Intermediate Technology, www.itpubs.org.uk
• TOOL Book, 2300 AH Leiden, ev. H:tool.nl
• Companion Planting