Haarmann, Harald. <br/><br/>
Language in ethnicity  a view of basic ecological relations / 
Harald Haarmann. 
 - Berlin :  Mouton de Gruyter,  1986. 
 - 287 p. :  23 cm. 
<br/><br/><label>ISBN: </label>0899250971 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Anthropological linguistics.<br/>Sociolinguistics.<br/>Ethnicity.