National Center for Education Statistics <br/><br/>
The condition of education 1997 / 
Thomas M. Smith a.o. 
 - Washington, DC :  U.S. Department of Education,  1997. 
 - 411 p. 
<br/><br/><label>ISBN: </label>0-16-049073-1 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Վիճակագրություն<br/>Education--Statistics