Encyclopædia Britannica it is scarcely used, and reviewers have recommended that it be dropped from the encyclopaedia. The also has color transparencies of human anatomy and several appendices listing the staff members, advisors, and contributors to all three parts of the Britannica. Taken together, the and comprise roughly 40 million words and 24,000 images. The two-volume index has 2,350 pages, listing the 228,274 topics covered in the "Britannica", together with 474,675 subentries under those topics. The "Britannica" generally prefers British spelling over American; for example, it uses "colour" (not "color"), "centre" (not "center"), and "encyclopaedia" (not "encyclopedia"). However, there are exceptions to
Encyclopedia number of serious errors and about 1/3 more minor factual inaccuracies, but Wikipedia's writing tended to be confusing and less readable. Encyclopædia Britannica refuted the study's conclusions, deeming the study fatally flawed. Many academics, historians, teachers, and journalists reject Wikipedia as a reliable source of information, and Wikipedia is itself not a reliable source according to its own standards because of its openly editable wiki model. Critics argue Wikipedia exhibits systemic bias. Wikipedia is by far the largest web-based encyclopedia, but it is not the only one in existence. There are several much smaller, usually more specialized, encyclopedias on various