Socio-economic analysis and planning :  Critical choice of methodologies. 

 - Paris :  UNESCO,  1986. 
 - 260 p. :  il., fot., lamns. 
 - Socio-economic studies ;  12 .
<br/><br/><label>ISBN: </label>9231023918 
<br/><br/><label>No. de Clasificación Universal Decimal: </label>3.002.1: 338 =20 SOC No.12.