Annual status report, macroinvertebrate sampling 

 - Onalaska, Wis.  U.S. Geological Survey, Environmental Management Technical Center 
<br/><br/> Description based on: 1992 (viewed on Apr. 13, 2004) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aquatic ecology<br/>Environmental monitoring<br/>Aquatic habitats
<br/><br/><label>GPO Item No.: </label>0671-L-03 (online) 
<br/><br/><label>Gov. Doc. Class. No.: </label>I 74.15/4: