BLOYD, RICHARD M. <br/><br/>
SUMMARY APPRAISALS OF THE NATION'S GROUND-WATER RESOURCES-UPPER MISSISSIPPI REGION 

 - WASHINGTON: USDI.,  1975 
 - 22P; ILLUST 
 - US GEOLOGICAL SURVEY PROFESSIONAL PAPER 813-B .
<br/><br/><br/>ENG 
<br/><br/><label>Subjects--Topical Terms: </label><br/>WATER SUPPLY-MISSISSIPPI VALLEY.<br/>WATER, UNDERGROUND-MISSISSIPPI VALLEY.