I Marxism-Leninism and Mao Zedong Thought

philosophy

Introduction to social science

Politics, law

E military

F economy

G. Culture, education, science and sports

H language, writing

I. Literature

J art

History, geography

Introduction to natural science

Mathematical science and chemistry

P astronomy, earth science

Q bioscience

R medicine and health

American agricultural science

technology

TD mining engineering

TE oil and gas industry

TF metallurgical industry

TG metallography, metal technology

Machinery and instrument industry

TJ weapon industry

TK power engineering

TL atomic energy technology

Radio electronics, electronic technology

TP automation technology and computing technology

TQ chemical industry

Light industry, handicraft industry

Slaughterhouse science

Television water conservancy project

U transportation

V. Aviation and aerospace

X. Environmental science

Z comprehensive publication

The middle is divided into four sections with "-". Such as "7-108-01662-1". The first paragraph is the country code. "7" means "China", and the second paragraph is the publishing house code. "108" means "Sanlian Bookstore", and the third paragraph is the book code. "0 1662" refers to the 1662 book published by Sanlian Bookstore. The fourth paragraph is the check code, which is calculated by the first nine digits according to certain rules. The ISBN code thus formed can uniquely represent each book. 7- 108-0 1662- 1.