ASTHANA D.K <br/><br/>
Environment  Problems and solutions  English 
D.K Asthana and Meera Asthana 
 - New Delhi  S  Chand  1998 
 - 434p  24cm 
<br/><br/><label>ISBN: </label>81-219-1654-2 
<br/><br/><label>Subjects--Topical Terms: </label>
<br/><br/><label>Dewey Class. No.: </label>333.7 AST