Kemper, Karin E. <br/><br/>
The cost of free water :   water resources allocation and use in the Curu Valley, Ceará, Northeast Brazil 

 - Sweden  Water and Environmental Studies, Linköping University,   1996. 
 - 230 p, +6  pc  28 cm 
<br/><br/><label>ISBN: </label>9178716748 
<br/><br/><label>Dewey Class. No.: </label>363.61