Document identification code generally refers to document identification code. Document Code The General Administration of Press and Publication issued and tried out "China Academic Journals (CD-ROM Edition) Retrieval and Evaluation Data Specification" in 1992. The following are the document identification codes and reference type identification codes I compiled. Welcome to reading.

File code

The national periodical publishing format requires that the document identification code be marked below the China Library Classification Number, as follows:

The author can choose an identification code from the following A, B, C, D and E to reveal the nature of the article:

A- Academic papers on theoretical and applied research (including summary reports);

B- report on practical achievements (science and technology) and summary of theoretical study and social practice (science and technology);

C- Articles on business guidance and technical management (including special comments);

D- General correspondence, reports and interviews. ;

Electronic documents, materials, people, books and periodicals, knowledge introduction, etc.

Note: English document identification code should correspond to Chinese.

Reference type identifier

M- monograph; C-prose collection; N- news; Paper article news; Periodicals; Articles;

D degrees; Dissertation; R report; ; S standard; ; Patents; ;

A-precipitated literary articles; In monographs and papers; Z—— Other unspecified documents

(1) file type identification: monograph [m]; Periodical [j]; Essay [c]; Dissertation [d]; Standard; Report [r]; Patent [p]; Newspapers;

(2) Electronic document type identification: database [DB]; Computer program; Electronic bulletin;

(3) carrier type and identification of electronic documents: online database [DB/OL];

1. file type identification/carrier type identification:

① Periodical [J]

② monograph [M]

(3) Essay [C]

④ Dissertation [D]

⑤ patent [P]

⑥ standard

All landowners newspaper

⑧ Technical report [R]

2. The type of electronic document carrier is identified by two letters, such as:

① magnetic tape [MT]

② Disk [DK]

③ compact disc [CD]

④ Online network [OL]

3. The reference type identification method of electronic document carrier type is as follows:

① Online online database [DB/OL]

② Tape database [DB/MT]

③ CD-ROM books [M/CD]

④ Disk software [CP/DK]

⑤ Network Journals [J/OL]

⑥ Online electronic bulletin [EB/OL]

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