Aquatic invertebrate bioassays :  a symposium sponsored by ASTM Committee D-19 on Water American Society for Testing and Materials, Blacksburg, va. 27 - 29 Sept., 1977 / 
A. L. Bulkema and John Cairns editors 
 - Philadelphia :  American Society for Testing and Materials,  1980 
 - 209 p. :  ill. ;  24 cm. 
 - ASTM special technical publication  715 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water quality bioassay--Congresses<br/>Aquatic invertebrates--Congresses