Talk:Organic farming and biodiversity

[Untitled]
First of all, excuse for my poor english, thanks. I see many references to van Elsen 2006 in the text, but I can't find the article or book of that author in the references section. ¿What is that article?. Thanks--84.79.65.169 (talk) 23:10, 3 November 2009 (UTC)

See - van Elsen 2000 Species diversity as a task for organic agriculture in Europe Ag, Eco and Env 77:101-109 —Preceding unsigned comment added by 129.93.172.74 (talk) 19:35, 23 November 2009 (UTC)