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Organization of Materials. Roberts-LaForge Library and the Instructional Resources Center. Four Classifications. Library of Congress Classification (general books and reference) Dewey Decimal Classification (IRC) Superintendent of Documents Classification (Federal Government Documents)

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Organization of Materials

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Organization of Materials

Roberts-LaForge Library and the Instructional Resources Center

Four Classifications

  • Library of Congress Classification (general books and reference)

  • Dewey Decimal Classification (IRC)

  • Superintendent of Documents Classification (Federal Government Documents)

  • Mississippi Government Documents Classification

Library of Congress Classification

General and Reference Books

Characteristics of Library of Congress Classification

  • Resources have alphabetical call numbers

  • Resources are arranged by subject

    • (for example, a book with a call number beginning with the letters “AY” would be in the “Yearbooks, Almanacs, and Directories” section)

Example of a LC Call Number

Occupational Outlook Handbook

HF 5381 .A1 O36 Ref 2002-03

Example of a List of LC Call Number Prefixes in Correct Order

N 81.2 G28

N 81.2 G7

NA 72.7

NC 2

Dewey Decimal Classification

Resources in the IRC

Characteristics of Dewey Decimal Classification

  • Resources have numerical call numbers

  • Resources are arranged by subject

    • (for example, resources pertaining to general physics have call numbers beginning with the numbers “530.”)

000 Computers, Information and General

100 Philosophy & Psychology

200 Religion

300 Social Sciences

400 Language

500 Science

600 Technology

700 Arts & Recreation

800 Literature

900 History & Geography

The 10 Main Classes of DDC

500 Science

510 Mathematics

520 Astronomy

530 Physics

540 Chemistry

550 Earth Sciences & Geology

560 Fossils & Prehistoric Life

570 Biology & Life Sciences

580 Plants (Botany)

590 Animals (Zoology)

Subclasses of Class 500: Science

Some Sub-subclasses of Subclass 530: Physics

  • 530 General works on physics

  • 531 Classical mechanics

  • 532 Fluid mechanics

  • 533 Gas mechanics

Example of a DDC Call Number

Holt Physics (textbook)

530 H758hS 2002 gr. 9-12 TEXTRS

Superintendent of Documents (SuDocs) Classification

Federal Government Documents

Characteristics of SuDocs Classification

  • Federal documents have alphabetical call numbers.

  • Federal documents are arranged by issuing government agency, not subject.

  • SuDocs classification is used for federal documents only. State documents have their own classification.

Call # Begins With








Issuing Agency

Agriculture Dept.

Commerce Dept.

Civil Rights Comm.

Fed. Trade Comm.

General Accounting

Interior Dept.

President of the U.S.

SuDocs Classification Examples

Example of a SuDoc Call Number

An Overview of OJP Bureaus, Offices, and COPS Information Technology Initiatives (U.S. Dept. of Justice)

J 26.2:IN 3/2

Mississippi Government Documents Classification

Characteristics of Mississippi Government Documents Classification

  • Call numbers begin with a number.

  • State documents are arranged by the government agency which issued them, not by subject.

Call # Begins With






Issuing Agency

Aeronautics Commission

Attorney General

Delta State Univ.

Forestry Commission

Secretary of State

Examples of Ms. Gov. Docs. Classification

Example of a Mississippi Government Document Call Number

MAFES Research Highlights

(Published by the Ms. Agricultural and Forestry Experiment Station)

422.2:RH 67/4

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