a system used by libraries to classify nonfictional publications into subject categories; the subject is indicated by a three-digit numeral and further specification is given by numerals following a decimal point; publications are shelved by number
a system used by libraries to classify nonfictional publications into subject categories; the subject is indicated by a three-digit numeral and further specification is given by numerals following a decimal point; publications are shelved by number
a system used by libraries for putting books into groups according to their subject. General subjects (for example, sports) are given a number, and then particular parts of this subject (for example, the Olympics) are each given a more specific number using DECIMAL numbers. The system was invented by Melvil Dewey (1851-1931), a US LIBRARIAN .