Duncan, Ernest R. <br/><br/>
Modern School Mathematics Struct and use. 

 - 1st Ed. 
 - Boston :  Houghton Mifflin Company,  1972. 
 - 316 p. 
<br/><br/><label>ISBN: </label>0395109833 
<br/><br/><label>Dewey Class. No.: </label>570  / DUN