1, M- monograph (including works on history and chronicles in ancient books). Refers to a special research topic, which is another name for a work. According to the length of academic papers, it can be divided into three types: single academic paper, series academic papers and academic monographs. Generally speaking, 40,000-50,000 words or more can be called academic monographs.

2. Prose collection. Literally, a collection of essays is a collection of papers with similar themes. For example, the papers in the collection of legal essays are all related to law. Papers can be published as a supplement to a book or periodical to distinguish academic periodicals. A collection of essays can also be a book that combines various forms of papers and binds them into a book.

3. Journal articles. Books are published by legally established periodical publishing units. Periodical publishing units must be approved by the General Administration of Press and Publication, hold a unified serial publication number in China, and obtain a periodical publishing license.

1, document ID (document

Code) is a classification code compiled according to China Academic Journal Retrieval and Evaluation Data Standard (CD-ROM Edition). Its function is to classify articles according to their contents, so as to facilitate literature statistics and periodical evaluation, determine the scope of literature retrieval and improve the applicability of retrieval results.

2. The details are as follows: a- Academic papers on theoretical and applied research (including summary reports); B- practical technical achievement report (science and technology), theoretical study and social practice summary (social science); C- Business guidance and technical management articles (including leadership speeches and special comments, etc.). ); D- General dynamic information (newsletters, reports, meetings, interviews, etc.). ); Electronic documents and materials (including historical materials, statistical data, institutions, people, books and periodicals, knowledge introduction, etc.). ).