Learning English Grammar

Library Classification

Library of Congress System

- is a classification system that was first developed in late 19th and early 20th centuries to organize and arrangebthe book collection of library of congress

- over the course of the 20th century, the system was adopted for use by other libraries as well, especially large academic libraries in the United States

- it is currently one of the the most widely usedd library classification in the world

Dewey Decimal System

- is a proprietary library classification system first published by Melvil Dewey in 1876

- it has been revised and expanded through 23 major editions, the latest issued on 2011

- the classification was notable in its time because it introduced the concepts of relative location and relative index

- it makes use of three-digit Arabic Numerals for main classes, woth decimals as expansions for more detail