OPEN University of Sri Lanka <br/><br/>
Environmental and appplied microbiology 

 - Nugegoda  The Open University of Sri Lanka  1998 
 - 2v. (v.2-xviii, 96 p.) 
<br/><br/><label>ISBN: </label>139232 
<br/><br/><label>Dewey Class. No.: </label>576  / OPE