Fyddech chi'n hoffi ymuno â grŵp cymdeithasol? : cyfleoedd cymdeithasol i bobl dros 16 oed â syndrom Asperger neu awtistiaeth gweithredu lefel uchel yng Nghymru = Would you like to join a social group. Published by Cymdeithas Genedlaethol Awtistiaeth Cymru in 2009. Publication and catalogue information, links to buy online and reader comments.