Educational technology :  the design and implementation of learning systems. 

 - París :  OECD,  1971. 
 - 86 p. 
<br/><br/> "This report is based on the work of CERI in the field of educational technology, and on the result of a workshop on Educational Technology-Strategies for Implementation" 
<br/><br/><label>Encabezamiento--Tema: </label><br/>Enseñanza técnica