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
Canadian Pop Music Encyclopedia Volume Two e-Book was also released in 2013 > The primary criteria for inclusion in the encyclopedia is that a band has been in existence for at least a year and has released music in a commercial format or as a commercially released solo act. Many Canadian music photographers have contributed material to the encyclopedia, including John Rowlands, Andrew MacNaughton, John Fraser and Allison Janzen. Canadian Pop Music Encyclopedia The Canadian Pop Music Encyclopedia is a two volume encyclopedia of Canadian pop music, available in hardcover and online, detailing Canadian music from 1949 onwards. The "Canadian Pop Music Encyclopedia" was