Short-term methods for estimating the chronic toxicity of effluents and receiving waters to freshwater organisms /  
editores:  Philip A. Lewis, Donald J. Klemm, James M. Lazorchak 
 - Tercera edición 
 - Washington :  Environmental Protection Agency (EPA),  1992 
 - xx, 335 p 
<br/><br/><label>Dewey Class. No.: </label>614.77 U58s 1992