Gumperz John J Language in social groups - California Stanford University Press 1971 - "xiv, 350p" cm. - Language Science and National Development Series. Ed by Anwar S Dil . Bibliography P 345-50 Standard No.: 90728 Source: Reference Collections Subjects--Topical Terms: Sociology of Language Dewey Class. No.: "Y:3(P).2.N7, L1"