Language maintenance and language shift / 
edited by Robert C. Williamson, John A. van Eerde ; general editor, Joshua A. Fishman. 
 - The Hague :  Mouton Publishers,  1980. 
 - 124 p. ;  23 cm. 
 - International journal of the sociology of language ;  no. 25 .
 - International journal of the sociology of language ;  no. 25 .
<br/><br/>Includes bibliographies. 
<br/><br/><label>ISBN: </label>9027930686 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Bilingualism--Addresses, essays, lectures.<br/>Diglossia (Linguistics)--Addresses, essays, lectures.