Nihon Jidō Tosho Shuppan Kyōkai is the trade association in Japan.
According to PR-model, kodomo.gr.jp is ranked 898,662nd in multilingual Wikipedia, in particular this website is ranked 71,529th in Japanese Wikipedia.
The website is placed before dialettiromagnoli.it and after atmospheric-chemistry-and-physics.net in the BestRef global ranking of the most important sources of Wikipedia.
