Cost-Benefit Analysis. Selected Readings 
Edited by Richard Layard 
 - New York  Penguin Books  1972 
 - 477p.18cm. 
<br/><br/><b>საგნობრივი რუბრიკები: </b><br/>Cost-Benefit Analysis. Selected Readings 
<br/><br/><b>UDC: </b>338