The Encyclopedia Nipponica (日本大百科全書, Nihon Dai Hyakka Zensho, lit. The Japan Comprehensive Encyclopedia) is a discontinued series of encyclopedia of Japan and the Japanese people, first published by Shogakukan from 1984 to 1989 in 25 volumes.[1] After 10 years of preparation, over 130,000 entries and 500,000 indexes were organized in alphabetical order in more than 23,000 pages. The most recent version, 1994, has 26 volumes, including the separate volumes of indexes and an auxiliary. The encyclopedia is currently out of print.