P R, Trivedi <br/><br/>
Encyclopedia of Environment Pollution,Planning and Conservation Vol 2 

 - New Delhi  P h Publishing Corporation  1998 
<br/><br/><label>Subjects--Uniform Titles: </label>--Post Graduate Reference
<br/><br/><label>Subjects--Topical Terms: </label><br/>Life Scinces--BiologyEcologyChemistry
<br/><br/><label>Dewey Class. No.: </label>577.2703  / TRI-E