John Richard Krueger b. 1927?, professor at Indiana University, specialized in studies of Chuvash and Yakut, and Mongolian languages. His approximately 20 books are the standard works, each held in about one hundred United States research libraries. One of his most important contributions is that he translated a lot of non-English sources and books into English, such as György Kara's Books of the Mongolian nomads : more than eight centuries of writing Mongolian.详情