Telephone directory / 
Ernakulam Telegraph Engineering Division, Kerala Telecommunication Circle, Posts and Telegraphs Department, India 
 - Ernakulam :  Author,  1976 
 - v. ;  20 cm. 
 - Annual 
 - (1976/1978-1981) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication--India
<br/><br/><label>Dewey Class. No.: </label>384.6