Hubbard, Michael D. <br/><br/>
Environmental requirements and pollution tolerance of Ephemeroptera / 
Michael D. Hubbard and William L. Peters 
 - Washington, D.C. :  National Endowment for the Arts,  1978 
 - vi, 461 p. ;  28 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental policy--Research<br/>Environmental impact analysis<br/>Sustainable development
<br/><br/><label>Dewey Class. No.: </label>574.50973