Distribution of nitrates and other water pollutants under fields and corrals in the middle South Platte Valley of Colorado 
[by B. A. Stewart and others. 
 - Washington]  Agricultural Research Service, U.S. Dept. of Agriculture,  1967. 
 - v, 206 p.  illus.  26 cm. 
<br/><br/> Cover title. 
<br/><br/>Bibliography: p. 205-206. 
<br/><br/><label>LCCN: </label>agr68000057  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nitrates.<br/>Water--Pollution--South Platte River Valley (Colo. and Neb.)<br/>Nitrates.<br/>Water, Underground--South Platte Valley.<br/>Water--Pollution.
<br/><br/><label>LC Class. No.: </label>S900.U5 no. 134 
<br/><br/><label>National Agricultural Library Call No.: </label>A56.9 R31 no. 134