The impact of certification on the sustainable use of devil's claw (Harpagophytum spp.) in Namibia 2003. Final draft.

Trade in devil's claw (Harpagophytum spp.) in Germany - status, trends and certification 2003. Final draft. Click here for ANNEX

Certification of Non-Wood Forest Products - an Overview 2002. Draft Discussion Paper.

The impact of certification on the sustainable use of brazil nut (Bertholletia excelsa) in Bolivia 2003. Final draft.