Stuck in the mud.  [electronic resource] 

 -  Nature  May 2008 
 - 258 p.  digital 
<br/><br/> Publication Type: Editorial 
<br/><br/><label>ISSN: </label>1476-4687 
<br/><br/><label>Standard No.: </label>10.1038/453258a  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Animals<br/>Cattle<br/>Environmental Monitoring--legislation & jurisprudence<br/>Fertilizers--adverse effects<br/>Humans<br/>Sewage--adverse effects<br/>United States<br/>United States Environmental Protection Agency--legislation & jurisprudence