"Encyclopedias" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus,
MeSH (Medical Subject Headings). Descriptors are arranged in a hierarchical structure,
which enables searching at various levels of specificity.
Works containing informational articles on subjects in every field of knowledge, usually arranged in alphabetical order, or a similar work limited to a special field or subject. (From The ALA Glossary of Library and Information Science, 1983)
This graph shows the total number of publications written about "Encyclopedias" by people in Harvard Catalyst Profiles by year, and whether "Encyclopedias" was a major or minor topic of these publication.
To see the data from this visualization as text, click here.