The first level is divided into humanities books and nature books according to the attributes of the universe.

The second level is divided according to the basic subject attributes of books. Basic humanities subjects: philosophy A, religion B, ethics C, logic D, aesthetics E, psychology F, language G, literature H, art I, politics J, economy K, military L, law M, education N, sports O, media P, information Q, management R, business S, history T, archaeology U, nationality V, life W, wealth X. J electric power, K textile, L food, M building, N mine, O metallurgy, P energy, Q transportation, R aerospace, S medicine, T project, U agriculture, V forestry, W aquaculture, X computer.

The third level is divided according to the standards of books affiliated disciplines.

The fourth level is divided by the functional attributes of books (writing, learning, teaching and helping).

The fifth level is divided into works (works, theoretical works and applied works), academics (annotation, evaluation, contention, discussion, research, textual research and translation), teaching (school textbooks, social training textbooks, self-study textbooks, reference materials, handouts, learning materials, popular reading materials, experimental exercises, test questions and exercises, teaching syllabus) and help (teaching syllabus) according to the category attributes of books. sequence

Level 6, according to the international space of books, is divided into domestic and foreign original books (non-disciplinary definition space).

The seventh level is divided into book time series (non-disciplinary time series).

Some technical notes on the comprehensive classification of books;

1. In the edition era, the author label belongs to the business scope of the publishing house and has been marked in the published books. Repeated labeling in classification numbers will bring a burden to readers. Advocating simplicity is the professional ethics of librarians, which must be resolutely retained, but must be resolutely eliminated. Cancel the recommendation number. Use collection number instead of collection number and book number, and use collection classification number to unify book titles.

3. The contents of disciplines are cross-cutting, and concepts have their essential attributes and non-essential attributes, which should generally be classified into one category and divided according to the concept words that reveal the essential attributes. Interdisciplinary subjects generally follow the discipline orientation law and are also restricted by discipline standards, which is special.

3. The subject classification of books is different from the subject classification standard; The book discipline code of this classification is a special book discipline code suitable for libraries. The book classification number can be used as the general number of book publishing.

4. Do not set up general complex tables, general complex tables, imitation tables and short tables, do not divide comprehensive books, do not use the general overall structure, and do not use the original carry conversion system for labeling.