Greenley, Douglas A. Walsh, Richard G. Young, Robert A. <br/><br/>
Economic benefits of improved water quality : public perceptions of option and preservation values 
Douglas A. Greenley , Richard G. Walsh and Robert A. Young 
 -  Westview Press Boulder , Colo.  1982  1982 
 - xix , 146 p. : fig. ; 24 cm. 
 - Studies in water policy and management  no. 3 .
<br/><br/> Includes bibliographical notes and index 
<br/><br/><label>ISBN: </label>0865314144 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water resources development<br/>Water quality management - Planning - United States - Citizen participation--HD
<br/><br/><label>LC Class. No.: </label>HD1691.G7 1982