History of the Encyclopædia Britannica the criteria by which the articles were sorted were not obvious even to scholars, despite Dr. Adler's claims that the sorting followed naturally from the "Propædia's" outline of all knowledge. In 1985, the "Britannica" responded to reader requests by restoring the index as a two-volume set. The number of topics indexed by the "Britannica" has fluctuated from 500,000 (1985, the same as in 1954) to 400,000 (1989,1991) to 700,000 in the current 2007 print version. Presumably, this recent increase reflects the introduction of efficient electronic indexing, since the size of the encyclopedia has remained nearly constant at approximately 40 million
Chinese encyclopedia Britannica". Among major online Chinese encyclopedias, for Standard Chinese, the two largest both began in 2005, the Baike.com Encyclopedia and the Baidu Encyclopedia. There is the Chinese Wikipedia (2002–present), and for varieties of Chinese, there are Cantonese, Mindong, Minnan, Wu, and Gan Wikipedias, as well as the Classical Chinese Wikipedia. Lastly, there are modern English-language encyclopedias of China. For example, the 1991 2nd edition of the "Cambridge Encyclopedia of China", the 2009 "Brill's Encyclopedia of China", and the 5-volume 2009 "Berkshire Encyclopedia of China". Chinese encyclopedia Chinese encyclopedias comprise both Chinese-language encyclopedias and foreign-language ones about China or Chinese topics.