Percival Marshall <br/><br/>
Mechanical facts : Made easy 

 - London  Percival Marshall & Co Limited 
 - 103p 
<br/><br/>Percival Marshall: Mechanical facts : Made easy.  London.  Percival Marshall & Co Limited,--(620MAR)   
<br/><br/><br/>ENGLISH 
<br/><br/><label>Dewey Class. No.: </label>620  / MAR