Poe, Gregory L. <br/><br/>
Valuing the incremental benefits of groundwater protection when exposure levels are known 
Gregory L. Poe and Richard C. Bishop 
 - Environmental and resource economics .
<br/><br/><label>Subjects--Index Terms: </label>Aguas subterraneas Analisis de costos y beneficios Barreras comerciales Modelos matematicos Econometria Economia ambiental