URI
Notation
81`2
Caption
Theory of signs. Theory of translation. Standardization. Usage. Geographical linguistics
Broader class
81`1/`4  Special auxiliary subdivision for subject fields and facets of linguistics and languages
Narrower classes
81`22General theory of signs in relation to linguistics. Semiology. Semiotics
81`23Psycholinguistics. Psychology of language
81`24Practical knowledge of languages
81`25Theory of translation
81`26Language planning. Control of language. Standardization of language
81`27Sociolinguistics. Usage of language
81`28Dialectology. Geographical linguistics. Areal linguistics