The LST Library has adopted the Dewey Decimal Classification (DDC) system to organize its vast collection of books. This system is renowned for its efficiency in helping users quickly identify and locate books, making it user-friendly and accessible. The DDC system categorizes all knowledge into ten main classes, each represented by a specific range of numbers. These classes cover broad subject areas, enabling libraries to systematically arrange their collections.

The Ten Main Subjects

The ten main Subjects in the DDC system are as follows:

• 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

Each of these classes is further divided into more specific categories, allowing for detailed classification of books on various subjects.

Focus on Subject 300: Social Sciences

The LST Library primarily uses Class 300, which is dedicated to the social sciences, to classify its collection. This class encompasses a wide range of subjects, including sociology, anthropology, political science, economics, law, public administration, social problems, and services. The classification within this class allows for an organized and logical arrangement of books, making it easier for users to find materials related to social sciences.

Within Class 300, the following subdivisions are particularly significant:

• 300: Social sciences
• 301: Sociology & anthropology
• 302: Social interaction
• 303: Social processes
• 304: Factors affecting social behavior
• 305: Social groups
• 306: Culture & institutions
• 320: Political science
• 321: Systems of governments & states
• 322: Relation of state to organized groups
• 323: Civil & political rights
• 324: The political process
• 325: International migration & colonization
• 326: Slavery & emancipation
• 327: International relations
• 328: The legislative process

Law and the DDC System

One of the key areas within Class 300 that the LST Library focuses on is the field of law, classified under the number 340. The legal subdivision covers a comprehensive range of topics related to law and its application in society. The following are key areas within the law classification:

• 340: Law
• 341: Law of nations
• 342: Constitutional & administrative law
• 343: Military, tax, trade & industrial law
• 344: Labor, social, education & cultural law
• 345: Criminal law
• 346: Private law
• 347: Civil procedure & courts
• 348: Laws, regulations & cases
• 349: Law of specific jurisdictions & areas

Public Administration and Social Problems

In addition to law, the LST Library also categorizes books under public administration and social problems, which are vital areas within the social sciences. These include:

• 350: Public administration & military science
• 351: Public administration
• 352: General considerations of public administration
• 353: Specific fields of public administration
• 354: Administration of economy & environment
• 355: Military science
• 356: Infantry forces & warfare
• 357: Mounted forces & warfare
• 358: Air & other specialized forces
• 359: Sea forces & warfare
• 360: Social problems & services; associations
• 361: Social problems & social welfare in general
• 362: Social welfare problems & services
• 363: Other social problems & services
• 364: Criminology
• 365: Penal & related institutions
• 366: Associations
• 367: General clubs
• 368: Insurance
• 369: Miscellaneous kinds of associations

By using the DDC system, the LST Library ensures that its collection is organized in a way that reflects the diversity and complexity of social sciences. This not only facilitates ease of access but also promotes a deeper understanding of the various disciplines within this field.