Dorofeev, G. <br/><br/>
Elementary mathematics  selected topic and problem solving 
G. Dorofeev...et.al 
 - Moscow:   Mir Publisher,  1973. 
 - 488p. 
<br/><br/><br/>eng 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>510  / DOE