NATIONAL WATER SUMMARY 1984 : HYDROLOGICAL EVENTS, SELECTED WATER-QUALITY TRENDS & GROUND-WATER... 

 - Washington DC : US Geological Survey,  1985 
 - 467p 
<br/><br/><br/>ENG 
<br/><br/><label>Subjects--Topical Terms: </label><br/>WATER QUALITY - UNITED STATES.<br/>GROUNDWATER RESOURCES.