Guide to practical project appraisal:  social benefit- cost analysis in developing countries / 
The United Nations Industrial Development Organization. 
 - New York:  UN,  c.1978. 
 - viii, 121 p., 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economic development.
<br/><br/><label>Dewey Class. No.: </label>338.9