Havelock, Ronald G. <br/><br/>
Solving educational problems :  the theory and reality of innovation in developing countries / 
Ronald G. Havelock; Allen Michael Huberman. 
 - Paris :  Genève :  UNESCO;  International Bureau of Education,  1977. 
 - 308 p.;  il., fot. 
 - IBE: Studies and surveys in comparative education) .
<br/><br/> Incluye bibliografía. 
<br/><br/><label>ISBN: </label>9231015273 
<br/><br/><label>No. de Clasificación Universal Decimal: </label>37.013. 75 (-77) =20 HAV.