Note, this is the English Translation, not the original Italian publication.
The original Italian version was published as a supplement to no. 4 volume 9 of Piante Grasse. Handbook for the identification of the Cactaceae included in the Appendix I of the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES)
Number of pages: 30. Original Italian edition prepared by: Paola Bartoletti, Mariangela Costanzo and Chiara Verard