Google Labs - Books Ngram Viewer. Publications: All categories – Most popular. World Oral Literature Project : Research & Outreach. Please read the following information carefully before searching the database.
Researchers at the World Oral Literature Project have compiled a database of language endangerment levels with references to collections and recordings of oral literature that exist in archives around the world. Data on language endangerment are drawn from the online Ethnologue, the UNESCO Atlas of the World’s Languages in Danger and from the work of conservation biologist Professor William Sutherland in the Department of Zoology at the University of Cambridge. Only languages classified as endangered by one or more of these datasets have been included in our database. Population statistics are primarily taken from the Ethnologue and three-letter ISO codes are provided where possible to facilitate search requests. 1.