Skemp, Richard R. <br/><br/>
Understanding mathematics.  book 4 / 
Richard R. Skemp. 
 - London:   University of London Press,   1967.  
 - 220 p. :  ill. ;  22 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>510