Allsop, F. C. <br/><br/>
Telephones  their construction and fittings 
F. C. Allsop 
 - London  E and F N Spon  1919 
 - 222p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>NASA Thesaurus<br/>Telephones
<br/><br/><label>Universal Decimal Class. No.: </label>621.395  / ALL