Righi, Augusto. <br/><br/>
[Extract from letter to Sir Oliver Lodge from Professor Righi of Bologna], 18th June 1897. 

 -  1897. 
 - 1  21 x 13 cm.  sheet ; 
<br/><br/><label>Subjects--Personal Names: </label><br/>Hertz, Heinrich, 1857-1894. <br/>Marconi, Guglielmo, 1874-1937 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coherer.