Shogakukan and Heibonsha
When it was founded in 1922, Shogakukan specialized in study books and magazines for elementary school students. According to its websites, 日本百科大事典 (Nihon hyakka daijiten) published in 1962 was the first encyclopedia from Shogakukan. Since then, Shogakukan has continuously published encyclopedias: 世界原色百科事典 (Sekai genshoku hyakka jiten) in 1965, 大日本百科事典ジャポニカ (Dainihon hyakka jiten japonica) in 1967, こども百科事典 (Kodomo hyakka jiten) in 1970, and 万有百科大事典 (Banyu hyakka daijiten) in 1972 among others. Shogakukan's Encyclopedia Nipponica has been one of the major Japanese encyclopedias. The other major encyclopedia, Heibonsha World Encyclopedia (世界大百科事典, Sekai daihyakka jiten), was published from Heibonsha. Since the foundation in 1914, Heibonsha has put emphasis on encyclopedias. Currently, World Encyclopedia holds three editions: World Encyclopedia, World Encyclopedia on DVD, and the online edition called Netto de hyakka.
Read more about this topic: Encyclopedia Nipponica