Bejarano, Julia Rosa Caicedo <br/><br/>
Effect of operational variables on nitrogen transformations in duckweed stabilization ponds / 
by Julia Rosa Caicedo Bejarano 
 - London :  Taylor & Francis,  2005 
 - 163 p. :  ill. ;  25 cm. 
<br/><br/><label>ISBN: </label>0415375541 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water--Purification<br/>Anaerobic bacteria