Biological treatment technologies  [videorecording] / 
produced and directed by David Weisman ; written by Todd Coleman 
 - 1 videocassette (VHS) (29 min.) :  sd., col. ;  1/2 in. 
 - Preserving the legacy [videorecording] .
<br/><br/>Executive producer, Sally V. Beaty ; edited by Claudia Hoover  Executive producer, Sally V. Beaty ; edited by Claudia Hoover 
<br/><br/>Narrator: Randy Oglesby 
<br/><br/><label>ISBN: </label> RM654.36 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Industrial microbiology.<br/>Biotechnology.<br/>Sewage--Purification--Biological treatment.