Elliott, E M <br/><br/>
Nitrogen isotopes as indicators of NO(x) source contributions to atmospheric nitrate deposition across the midwestern and northeastern United States.  [electronic resource] 

 -  Environmental science & technology  Nov 2007 
 - 7661-7 p.  digital 
<br/><br/> Publication Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S. 
<br/><br/><label>ISSN: </label>0013-936X 
<br/><br/><label>Standard No.: </label>10.1021/es070898t  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Air Pollutants--analysis<br/>Ecosystem<br/>Environmental Monitoring--methods<br/>Geography<br/>Hydrogen-Ion Concentration<br/>Models, Chemical<br/>Models, Theoretical<br/>Nitrates--chemistry<br/>Nitrogen--chemistry<br/>Nitrogen Isotopes--analysis<br/>Nitrogen Oxides--chemistry<br/>Rain<br/>United States<br/>Water Pollutants, Chemical--chemistry