The fantastic book ‘Threatened Amphibian Species of the World’ is now available for free online. http://www.amphibians.org/publications/threatened-amphibians-of-the-world/
This excellent resource contains essays by DICE staff Professor Richard Griffiths, Dr Jeannie McKay and Dr Ian Bride. These essays are featured in the Introductory Chapters section and commence on pages 29 and 131. Professor Griffiths also co-edited Chapter 10.