Curral, Henry F. J. <br/><br/>
Graphone and practice 

 - London  C. Lockwood  1963 
 - x,182p.  23cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Phonorecords
<br/><br/><label>LC Class. No.: </label>ML11.5.I8