Li, Qi <br/><br/>
[Identification of critical area of phosphorus loss in agricultural areas of Guishui River watershed by phosphorus loss risk assessment].  [electronic resource] 

 -  Huan jing ke xue= Huanjing kexue  Jan 2008 
 - 32-7 p.  digital 
<br/><br/> Publication Type: English Abstract; Journal Article; Research Support, Non-U.S. Gov't 
<br/><br/><label>ISSN: </label>0250-3301 
<br/><br/><label>Subjects--Topical Terms: </label><br/>China<br/>Crops, Agricultural--growth & development<br/>Environmental Monitoring--methods<br/>Phosphorus--analysis<br/>Risk Assessment<br/>Rivers--chemistry<br/>Water Pollutants, Chemical--analysis