Dewey Decimal Classification
The Dewey Decimal Classification (DDC), or Dewey Decimal System, is a proprietary library classification system first published in the United States by Melvil Dewey in 1876. It has been revised and ex...
Dewey Decimal Classification - Wikipedia
History
History (from Greek ἱστορία, historia, meaning "inquiry, knowledge acquired by investigation") is the study of the past, particularly how it relates to humans. It is an umbrella term that relates to p...
Information
Information (shortened as info or info.) is that which informs, i.e. an answer to a question, as well as that from which knowledge and data can be derived (as data represents values attributed to para...
Science
Science (from Latin scientia, meaning "knowledge") is a systematic enterprise that builds and organizes knowledge in the form of testable explanations and predictions about nature and the universe. Th...
Recreation
Recreation is an activity of leisure, leisure being discretionary time. The "need to do something for recreation" is an essential element of human biology and psychology. Recreational activities are o...
Psychology
Psychology is an academic and applied discipline that involves the scientific study of mental functions and behaviors. Psychology has the immediate goal of understanding individuals and groups by bot...
Psychology - Wikipedia
Comparison of Dewey and Library of Congress subject classification
This is a conversion chart showing how the Dewey Decimal and Library of Congress Classification systems organize resources by concept, in part for the purpose of assigning call numbers. These two sys...
Religion
Religion Portal  A religion is an organized collection of beliefs, cultural systems, and world views that relate humanity to an order of existence. Many religions have narratives, symbols, a...
Religion - Wikipedia
Technology
Technology (from Greek τέχνη, techne, "art, skill, cunning of hand"; and -λογία, -logia) is the collection of techniques, methods or processes used in the production of goods or services or in the acc...
Philosophy
Philosophy is the study of general and fundamental problems, such as those connected with reality, existence, knowledge, values, reason, mind, and language.Philosophy is distinguished from other ways ...
Philosophy - Wikipedia
The Arts
The arts represent an outlet of expression, that is usually influenced by culture and which in turn helps to change culture. As such, the arts are a physical manifestation of the internal creative imp...
The Arts - Wikipedia
Geography
Geography (from Greek γεωγραφία, geographia, lit. "earth description") is a field of science dedicated to the study of the lands, the features, the inhabitants, and the phenomena of the Earth. A liter...
Geography - Wikipedia
Social science
Social science is a major branch of science, and a major category of academic disciplines, concerned with society and the relationships among individuals within a society. It in turn has many branches...
Social science - Wikipedia
List of Dewey Decimal classes
The Dewey Decimal Classification is a system of library classification made up of ten classes, each divided into ten divisions, each having ten sections. For example, class 600 ("Technology") include...
Language
Language is the human ability to acquire and use complex systems of communication, and a language is any specific example of such a system. The scientific study of language is called linguistics.Quest...
Literature
Literature, in its broadest sense, is any written work; etymologically the term derives from Latin literatura/litteratura "writing formed with letters", although some definitions include spoken or sun...
Literature - Wikipedia
Computer science
Computer science is the scientific and practical approach to computation and its applications. It is the systematic study of the feasibility, structure, expression, and mechanization of the methodical...
Computer science - Wikipedia