Mulder, Johannes wilhelmus Franciscus Sets and relations in phonology : an axiomatic approach to the d escription of speech / by J.W.F. Mulder - Oxford : Clarendon P. , 1968. - xv, 259 p. : ill. ; 23 cm. Revision of author's thesis, Oxford Includes bibliographical references : p.247-248 ISBN: 0198119321 Subjects--Topical Terms: Grammar, Comparative--Phonology. Dewey Class. No.: 414 MUL