Ecological assessment of macrophyton :  collection, use, and meaning of data : a symposium sponsored by ASTM Committee D-19 on Water, Fort Lauderdale, FL, 15-16 Jan., 1983 / 

 - Philadelphia, PA :  ASTM,  c1984. 
 - 122 p. :  ill. ;  23 cm. 
<br/><br/><label>ISBN: </label>0803102046 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aquatic plants<br/>Aquatic plants<br/>Plant populations
<br/><br/><label>Dewey Class. No.: </label>581 AST 1984 A082 Or.