Barceloux, 2008. John Wiley and Sons, 2008 Document reference Barceloux, D. G., 2008. Medical toxicology of natural substances: foods, fungi, medicinal herbs, plants, and venomous animals. John Wiley and Sons, 2008Web http://books.google.com/books?id=CpqzhHc072ACCitation key Barceloux, 2008Datasheets Prickly pear (Opuntia ficus-indica)Tomato leaves and crop residues