Landsheere, Gilbert de. <br/><br/>
Empirical research in education / 
G de Landsheere 
 - Paris:  Unesco,  1982 
 - 113p. 
<br/><br/> Prepared for the International Bureau of Education 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education--Research<br/>Education--Experimental methods