Classification of literature information resources

According to the processing situation, there can be first-class documents, second-class documents and third-class documents; According to the carrier form, there can be written documents, printed documents, microfilms, audio-visual documents, machine-readable documents and so on. According to the subject scope of the content, there are social science documents, scientific and technological documents and so on. A particular document may have the characteristics of two or more types of documents. For example, Journal of Nanjing University (Social Science Edition) is not only a periodical, but also a first-class document, printed document and social science document. The National Standard Document Types and Document Carrier Codes (GB3469-83) classifies documents into 26 categories according to practical standards, namely: monographs, newspapers, periodicals, conference proceedings, compilations, dissertations, scientific reports, technical standards, patent documents, product samples, Chinese translations, manuscripts, reference tools, retrieval tools, files, charts, ancient books and so on. There are 1 1 types of documents: books, newspapers, dissertations, conference materials, patent documents, scientific and technological reports, product materials, scientific and technological archives, standard materials, government publications and online texts.