http://book.klll.cc/ebooks/subject/23453.opds?sort_order=title 2025-08-15T21:48:42Z Books about Mental retardation (sorted alphabetically) Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-08-15T21:48:42Z https://book.klll.cc/ebooks/subject/23453.opds?sort_order=release_date Sort by Release Date 2025-08-15T21:48:42Z https://book.klll.cc/ebooks/subject/23453.opds?sort_order=downloads Sort by Popularity 2025-08-15T21:48:42Z https://book.klll.cc/ebooks/39670.opds Idiot: His Place in Creation, and His Claims on Society Sir Frederick Bateman 2025-08-15T21:48:42Z https://book.klll.cc/ebooks/53958.opds Kallikak Family: A Study in the Heredity of Feeble-Mindedness Henry Herbert Goddard