TOML

National Diet Library Classification - TOML

The National Diet Library Classification (NDLC) is a unique classification system used by the National Diet Library of Japan since 1963, employing a mixed non-decimal classification method combining Roman letters and numbers. It is characterized by its emphasis on social sciences and consists of 16 major categories ranging from politics, law, and administration to science and technology, and serial publications. Designed for the efficient management and organization of vast collections gathered from both domestic and international sources, it serves as a fundamental classification system for Japan's national library system.

library classification National Diet Library bibliography collection management

[[items]]
code = "A"
slug = "politics-law-administration"
name = "Politics, Law, Administration"
description = "Classification for materials on political science, law, and public administration."

[[items]]
code = "B"
slug = "parliamentary-publications"
name = "Parliamentary Publications"
description = "Classification for official records and materials of the National Diet and foreign parliaments."

[[items]]
code = "C"
slug = "legal-materials"
name = "Legal Materials"
description = "Classification for materials on laws, government ordinances, and ministerial regulations."

[[items]]
code = "D"
slug = "economics-industries"
name = "Economics, Industries"
description = "Classification for materials on economics, industry, commerce, and finance."

[[items]]
code = "E"
slug = "social-affairs-labor"
name = "Social Affairs, Labor"
description = "Classification for materials on social issues, social welfare, and labor issues."

[[items]]
code = "F"
slug = "education"
name = "Education"
description = "Classification for materials on pedagogy, school education, and social education."

[[items]]
code = "G"
slug = "history-geography"
name = "History, Geography"
description = "Classification for materials on history, geography, topography, and biography."

[[items]]
code = "H"
slug = "philosophy-religion"
name = "Philosophy, Religion"
description = "Classification for materials on philosophy, ethics, and religious studies."

[[items]]
code = "K"
slug = "arts-language-literature"
name = "Arts, Language, Literature"
description = "Classification for materials on fine arts, music, theater, linguistics, and literature."

[[items]]
code = "M-S"
slug = "science-technology"
name = "Science and Technology"
description = "Classification for materials on natural sciences, engineering, medicine, and agriculture."

[[items]]
code = "U"
slug = "general-learning-journalism-libraries-bibliographies"
name = "General Learning, Journalism, Libraries, Bibliographies"
description = "Classification for materials on academic research, journalism, library science, and bibliography."

[[items]]
code = "V"
slug = "special-collections"
name = "Special Collections"
description = "Classification for special collections gathered by specific themes or formats."

[[items]]
code = "W"
slug = "old-rare-books"
name = "Old and Rare Books"
description = "Classification for classical texts, rare books, and antiquarian materials."

[[items]]
code = "X"
slug = "kansai-library-materials"
name = "Kansai Library Materials"
description = "Classification for materials housed at the Kansai Branch of the National Diet Library."

[[items]]
code = "Y"
slug = "childrens-books-special-materials"
name = "Children's Books, Simplified Processing Materials, Textbooks, Special Reading Room Materials, Special Materials"
description = "Classification for children's books, textbooks, and materials in special formats."

[[items]]
code = "Z"
slug = "serial-publications"
name = "Serial Publications"
description = "Classification for periodically published materials such as magazines, newspapers, and yearbooks."