Shogakukan has compared its Nikkoku dictionary to the Oxford English Dictionary (OED) because the Nikkoku represents the largest and most thorough dictionary of the Japanese language, and also provides etymologies and historical citations for its entries.
Nihon University | Nihon Keizai Shimbun | Nihon Ōdai Ichiran | Nihon Ken Hozonkai | Nihon Igai Zenbu Chinbotsu | Nihon Bungeisha | Alexis Nihon |