Waves / 
National Institute of Communication Finance, Ministry of Communications & IT, Government of India. 
 - Ghaziabad:  The Author,  n.d. 
 - [8], 40 p. :  col. ill. ;  28 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Waves
<br/><br/><label>Dewey Class. No.: </label>530.14