Tuesday, 29 April 2025

Top 5 Concepts That Power Universal Library Classification

Understanding Universal Library Classification: A Beginner’s Guide

Understanding Universal Library Classification: A Beginner’s Guide




๐Ÿ” Summary

Universal Library Classification is the science of organizing knowledge by breaking it down, layering it, or combining it. Key processes involved include:

  • Denudation – peeling back layers to reveal core topics
  • Dissection – dividing a subject into equal parts
  • Lamination – layering additional aspects onto a topic
  • Fission – internal splitting of a subject into new disciplines
  • Fusion – combining multiple subjects to form a new one


๐Ÿ“š Universal Library Classification: Key Concepts



๐Ÿง… 1. Denudation: Peeling Back Layers

  • Making something bare by removing layers.
  • Like peeling an onion to uncover deeper knowledge.
  • Repeatedly applied to one entity to find its core idea.
  • Example: World → Asia → India → Tamil Nadu
  • Scope decreases, specificity increases.



๐Ÿ”ช 2. Dissection: Dividing into Coordinate Parts

  • Splits a subject into equal-level, parallel parts.
  • Example: India → Tamil Nadu, Kerala, Maharashtra
  • Usually done by an external agent.

๐Ÿงป 3. Lamination: Layering Aspects

  • Adds qualifiers or attributes to a base subject.
  • Example: Cake → Chocolate Cake → Wedding Chocolate Cake
  • Builds compound subjects, not subdivisions.


⚛️ 4. Fission: Internal Subject Division

  • Splits from within, without external intervention.
  • Example: Natural Philosophy → Physics, Chemistry, Biology
  • Leads to emergence of Primary Basic Subjects (PBS).

๐Ÿ”— 5. Fusion: Combining to Form New Subjects

  • Merges two or more fields into a new one.
  • Example: Biology + Chemistry = Biochemistry
  • Results in independent, interdisciplinary fields.



๐Ÿง  Final Thoughts



  • Denudation and Dissection break down knowledge.
  • Lamination adds depth.
  • Fission and Fusion explain subject evolution.
  • Useful for students, researchers, librarians alike.




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