1. European Red List of Vascular Plants;Bilz,2011
2. Crop wild relatives: establishing the context;Maxted,2008
3. The First Resource: Wild Species in the North American Economy;Prescott-Allen,1986
4. Genes from the Wild: Using Wild Genetic Resources for Food and Raw Materials;Prescott-Allen,1988
5. Gene Banks and the World's Food;Plucknett,1987