Knox, Ronald <br/><br/>
The Three taps 

 - Harmondsworth  Penguin Books  1960 
 - 192 
 - Penguin Books 1451 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>English fiction<br/>English literature<br/>Mystery fiction
<br/><br/><label>Dewey Class. No.: </label>823.087  / K77t