In 1971, John Ballard, working with the Department of Linguistics and Nigerian Languages, University of Ibadan, did an extensive linguistic survey of the Nigerian Middle Belt published " Historical inferences from the linguistic geography of the Nigerian Middle Belt ".
12.
The magazine contained studies, articles, notes and reviews, mainly on linguistics ( lexicology, dialectology, linguistic geography, language history, onomastics, general linguistics, grammar, phonetics and phonology ) and philology, as well as research on history and literary criticism, cultural history and folklore.
13.
Inspired by Trubetzkoy, proposed a synthesis of linguistic geography and descriptive linguistics by applying the structuralist concept of grammar to the description of regular correspondences between different varieties; a resulting supergrammar, which he called a " diasystem ", would be consistent with the individual grammars of all the member dialects.
14.
He belongs to the Editorial Board of the journals : " International Journal of the Sociology of Language ", " Journal of Linguistic Geography ", " Journal of World Languages ", " Bolet�n de Filolog�a de la Universidad de Chile ", " Ling��stica Espa�ola Actual ", " Revista Internacional de Ling��stica Iberoamericana ", and " Oralia ".
