Proceedings of the Symposium on the Recovery of Indicator Organims Employing Membrane Filters /  
edited by Robert H. Bordner, Clifford F. Frith, John A. Winter. 
 - Cincinnati, Ohio :   United States Environmental Protection Agency, Office Research and Development, Environmental Monitoring and Support Laboratory,   1977. 
 - 188 p. :   il. 
 - Research Reporting series .
<br/><br/><label>Dewey Class. No.: </label>576