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Dewey Decimal Classification
It is a way to organize books the same way in different libraries.
It is a hierarchy, or a ladder like system so each book is part of a larger grouping.
It uses numbers to code each book differently.
It is easy to use and understand.
It helps organize books and makes them quick to find.
Books that are similiar or the same subject are placed together.
There are three different summaries or guiding lists to use to locate books.
Use the 1st Summary to determine a main class or section.
Determine what class the book you are looking for would fall in.
The Second Summary identifies the hundreds division. The second digit in each three digit number refers to the division. For example, 600 is technology, 610 medicine and health, 620 engineering.
The Third Summary identifies the thousand sections. The third digit in each three-digit number indicates the section. For example, 610 is used for general works on medicine and health, 611 for human anatomy, 612 for human physiology, etc.
First Summary
The Ten Main Classes
000 Computer science, information, general works
100 Philosophy, psychology
200 Religion
300 Social sciences
400 Language
500 Science
600 Technology
700 Arts & recreation
800 Literature
900 History & geography