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THE DEWEY DECIMAL CLASSIFICATION SYSTEM

How the Library Organized

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Melvil Dewey 1851-1931

  • In 1876, Melvil Dewey devised a system of organizing books which is used in many libraries – The Dewey Decimal Classification System. He divided books into subject categories instead of arranging it alphabetically. That way all the books on a topic would be together on the shelf.

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Dewey Decimal Classification

  • World’s most widely used library classification system
  • More than 140 countries use DDC
  • Uses numbers to represent subjects
  • Published by OCLC (Online Computer Library Centre, Inc.) in full and abridged editions
  • Presently 23rd edition is in use

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UNDERSTANDING THE STRUCTURE OF DEWEY DECIMAL CLASSIFICATION

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  • DDC is divided into 10 main classes

- represent the most general subject areas

  • Each main class is further divided into 10 more specific subjects & these are called the Hundred Divisions
  • The third digit of each number is assigned with the Thousand Sections
  • Arrangement is done as per discipline

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THE BEGINNER’S GUIDE TO DEWEY DECIMAL�CLASSIFICATION

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HOW CALL NUMBERS WORK

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  • All print or paper copies of books in the library have assigned call number, usually found on the book spine.
  • The call number represents what the book is about and acts like the book’s address on the library’s shelves.
  • It is made up of location code, numbers, author’s name/cutter line and copyright year.

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CIR

Location Code

(specific to our library)

Dewey Decimal number

(number that indicates a

specific subject area)

Author’s last name/cutter line

Copyright year

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  • Books are put on the shelf in number order, and then by the first letter of the author’s last name;

CIR

371.22

M215c

2015

CIR

373.1

B363

2000

CIR

383

Aq21r

2010

CIR

394.1

L310a

1994

CIR

394.1

N143d

2017

CIR

394.1

R833

2005

in some cases refers to the first letter

of the title.

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  • Books are color coded according to their discipline.

000 – 099

COMPUTER SCIENCE,

INFORMATION &

GENERAL WORKS

100 – 199

PHILOSOPHY &

PSYCHOLOGY

200 – 299

RELIGION

300 – 399

SOCIAL

SCIENCES

400 – 499

LANGUAGE

500 – 599

SCIENCE

600 – 699

TECHNOLOGY

700 – 799

ARTS &

RECREATION

800 – 899

LITERATURE

900 – 999

HISTORY &

GEOGRAPHY

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CGEAHS Library

000-099

100-199

200-299

300-399

400-499

500-599

600-699

700-799

800-899

900-999

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WEBSITES TO AIDE OUR CATALOGING

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  • OhioLink – http://olc1.ohiolink.edu/search/

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  • LC Catalog – https://catalog.loc.gov/

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  • Philippine eLib – http://www.elib.gov.ph/

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  • Author’s Cutter Table – http://www.unforbi.com.ar/cutteren/

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THANK YOU!

Presented by:

Esmeralda D. Cadeliña

School Librarian

Camp Gen. Emilio Aguinaldo HS

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😉