- 1"Seeds of doubt North America farmers' experiences of GM crops" Soil Association Organic Standard (MS/2143/03/12)
16th August 2002, item - 2Soil Association genetic engineering news week ending (MS/2153/04/19)
16th March 2001, item - 3Hay festival Alex Avery vs Soil Association debate (MS/2155/01/25)
2007, item - 4"Seeds of doubt - North American farmers' experiences of GM crops" (MS/2176/09)
August 2004, item
