LEARNING DIFFICULTIES
Autism - The Sunderland Research Unit. (R)A good place to start. Authoritative http://osiris.sunderland.ac.uk/autism/
Down's Syndrome - Down's Syndrome Assn. UK (R) http://www.downs-syndrome.org.uk/
- Additionally:(American) http://www.nas.com/downsyn/index.html
Mencap - (The national charity for learning disabilities): http://www.mencap.org.uk/