Lancaster, Frederick Wilfrid,  1933-2013 <br/><br/>
Guidelines for the evaluation of information systems and services / 
Frederick Wilfred Lancaster. 
 - Paris :  UNESCO,  1978. 
 - v, 169 p. :  il., tablas 
<br/><br/><label>Encabezamiento--Tema: </label><br/>SERVICIOS DE INFORMACION ---EVALUACION