Papers from an international conference on the interaction of languages and dialects in contact are presented in this volume. Papers include: "Quelques reflexions sur la variation linguistique"; "The Investigation of 'Language Continuum' and 'Diglossia': A Macrological Case Study and Theoretical Model"; "A Survey of Dialect Grammar in British English"; "The Relevance of Social Network Analysis in the Psycholinguistic Investigation of Multilingual Behavior"; "Networks, Language Variation and the Relevance of Sociolinguistic Research"; "Language Choice and Communicative Intent in a British Black Community"; "'The Essence of Language is History': A Theoretical Introduction to the Connection Between Social Relations and Language Relations in 19th Century Brussels"; "Elements de reflexion sur l'analyse des aspects societaux des contacts des langues"; "Problemes de l'enseignement des langues secondes standard pour les minorites culturelles"; "L'enseignement des langues secondes standard aux minorites culturelles a Bruxelles"; "Problemes de l'enseignement de la langue seconde standard pour les minorites culturelles"; "Macrological and Micrological Problems in the Study of Multilingual and Multicultural Education"; and "A Project of Community Bilingual Education: Some Theoretical and Applied Issues." Papers in French have English abstracts and papers in English have French abstracts. Commentaries on the papers are also included. (MSE)