Quartotry Journal of Mathematics 

 - London  Oxford University Press  1962 
<br/><br/><label>ISSN: </label>5021 
<br/><br/><label>Standard No.: </label>
<br/><br/><label>LC Class. No.: </label>01QJOM       
<br/><br/><label>GPO Item No.: </label>1005021