Telephone directory / 
Ernakulam Telephone District, Post and Telegraphs Department, India 
 - Cochin :  Author,  1977 
 - v. ;  29 cm. 
 - Irregular 
 - (1977/1980-1981) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication--India
<br/><br/><label>Dewey Class. No.: </label>384.6