Perelman, Yakov Isidorovich;Mathematics can be fun 

 - Moscow  Mir Publishers  c1979 
 - v. ; 22cm. 
<br/><br/> Contents :Pt. 1 : Figures for fun  Pt. 2 : Algebra can Be fun 
<br/><br/><label>Dewey Class. No.: </label>510  / PER