Problems red set 

 - London :  Nuffield Mathematics Project,  1970 
 - 80p.;  20cm 
<br/><br/><label>ISBN: </label>0550770178 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social Sciences
<br/><br/><label>Dewey Class. No.: </label>372.7  / PRO