Williams Francis <br/><br/>
Pattern of rulers 
Williams Francis 
 - London  Longmans         1965 
 - 272p  cm. 
<br/><br/><label>Standard No.: </label>48689 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>V3y7M6, K5