Should the classification of library books be very detailed?

A Marxism, Leninism, and Mao Zedong Thought

1 Works by Marx and Engels2 Works by Lenin3 Works by Stalin4 Works by Mao Zedong5 Compilation of works by Marx, Engels, Lenin, Stalin, and Mao Zedong7 The lives and biographies of Marx, Engels, Lenin, Stalin, and Mao Zedong 8 Study and research of Marxism, Leninism, and Mao Zedong Thought

B Philosophy

0 Philosophical Theory 1 World Philosophy 2 China Philosophy 3 Asian Philosophy 4 African Philosophy 5 European Philosophy 6 Oceanian Philosophy 7 American Philosophy 80 Logic Science (General) 81 Logic 82 Ethics 83 Aesthetics 84 Psychology 9 Atheism, Religion

C General Introduction to Social Sciences

0 Social science theory and methodology 1 Current status and overview of social science 2 Institutions, groups, conferences 3 Social science research methods 4 Social science education and popularization 5 Social science series, collections, and continuous publications 6 Social science Reference tool book [7] Social science literature search tool book 8 Statistics 91 Sociology 92 Demography 93 Management science [94] Systems theory (systematics, systems engineering) 96 Talent science

D Politics, law

0 Political Theory 1/3 Communist Movement, Communist Party 4 Workers, Peasants, Youth, Women’s Movements and Organizations 5/7 Politics of World Countries 8 Diplomacy, International Relations 9 Law< /p>

E Military

0 Military theory 1 World military 2 Chinese military 3/7 Military of various countries 8 Strategy, campaign, tactics 9 Military technology 99 Military topography, military geography

F Economics

0 Political Economics 1 Economic overview of various countries in the world, economic history, economic geography 2 Economic planning and management 3 Agricultural economy 4 Industrial economy 5 Transportation economy 6 Post and telecommunications economy 7 Trade economics 8 Finance , Finance

G Culture, science, education, sports

0 Cultural theory 1 Overview of cultural undertakings in various countries around the world 2 Information and knowledge dissemination 3 Science, scientific research 4 Education 8 Sports

H Language and writing

0 Linguistics 1 Chinese 2 Chinese minority languages ??3 Commonly used foreign languages ??4 Sino-Tibetan language family 5 Altaic language family 7 Indo-European language family

I Literature< /p>

0 Literary Theory 1 World Literature 2 Chinese Literature 3/7 Literature of Various Countries

J Art

0 Art Theory 1 Overview of Art in Various Countries in the World 2 Painting 3 Sculpture 4 Photography Art 5 Arts and Crafts 6 Music 7 Dance 8 Dramatic Art 9 Film and Television Arts

K History, Geography

0 Historical Theory, 1 World History, 2 Chinese History, 3 Asian History, 4 History of Africa, 5 History of Europe, 6 History of Oceania, 7 History of the Americas, 81 Biography, 85 Literature and Archeology, 89 Customs and Habits, 9 Geography

N General Introduction to Natural Sciences

O Mathematics Science and Chemistry

1 Mathematics 3 Mechanics 4 Physics 6 Chemistry 7 Crystallography

P Astronomy, Geographical Sciences

1 Astronomy 2 Surveying and Mapping 3 Geophysics 4 Meteorology 5 Geology 7 Oceanography 9 Physical Geography

Q Biological Sciences

1 General Biology 2 Cytology 3 Genetics 4 Physiology 5 Biochemistry 6 Biophysics 7 Molecular Biology 81 Bioengineering 91 Paleontology 93 Microbiology 94 Botany 95 Zoology 96 Entomology 98 Anthropology

R Medicine, Health

1 Preventive Medicine, Hygiene 2 Chinese Medicine 3 Basic Medicine 4 Clinical Medicine 5 Internal Medicine 6 Surgery 8 Special Medicine 9 Pharmacy

S Agricultural Science

1 Basic Agricultural Science 2 Agricultural Engineering 3 Agriculture (Agronomy) 4 Plant protection 5 Crops 6 Horticulture 7 Forestry 8 Livestock, veterinary medicine, hunting, silkworms, bees 9 Aquaculture, fishery

T Industrial technology

TB General industrial technology TD Mining engineering TE Petroleum, natural gas Industry TF Metallurgical industry TG Metallurgy, metal technology TH Machinery and instrument industry TJ Weapons industry TK Power engineering TL Atomic energy technology TM Electrical technology TN Radio electronics, telecommunications technology TP Automation technology, computing technology TQ Chemical industry TS Light industry, handicraft industry TU Construction science TV Water conservancy project

U Transportation

1 Comprehensive transportation 2 Railway transportation 4 Road transportation 6 Water transportation[8] Air transportation

V Aviation, aerospace

1 Research and exploration of aviation and aerospace technology 2 Aviation 4 Aerospace (space navigation) [7] Aviation and aerospace medicine

X Environmental science, labor protection science (safety science)

1 Basic theories of environmental science 2 Environmental protection management 3 Comprehensive environmental research 4 Disasters and their prevention and control 5 Environmental pollution and their prevention and control 7 Waste treatment and comprehensive utilization 8 Environmental quality assessment and environmental monitoring 9 Labor protection science (safety science) < /p>

Z Comprehensive books

1 Series 2 Encyclopedias, category books 3 Dictionaries 4 Collections of essays, complete works, anthologies, miscellaneous works 5 annuals, annuals 6 journals, serial publications 8 books Table of contents, abstract, index