When querying English periodicals, you only need to have the volume number and article page number, depending on what information the English periodicals give.

There will be a bracket in the middle of the volume number and issue number of general English documents, with the volume number in front of the bracket, the period in the bracket and the page number attached behind the bracket. The full name of vol is Volume, which means volume, and No means period.

For example, 97 volumes, July 20 12, 1-23 pages, which means that English articles are in a 97-volume periodical, published in July 20 12, with the page number 1-23. Some English journals simply give papers a document code, such as doi:10.1136. A paper has a unique number that can be found without problems.

Periodical grading method

Academic journals can be divided into provincial, national, sci-tech core journals (statistical source journals), Chinese core journals (Peking University Chinese core journals), CSSCI, CSCD, dual-core journals and so on.

Local medicine

The competent unit is a periodical headed by a provincial institution;

national medicine

The competent unit is a periodical headed by a national institution or a first-class association or society;

Science and technology core

Journals entering the core catalogue of science and technology of China Institute of Science and Technology Information;

China core

Journals that enter the Chinese Core Catalogue of Peking University published by Peking University Library.