Negi, S. S <br/><br/>
A hand book of environmental science 
S.S. Negi 
 - Dehra Dun  Bishen Singh Mahendra Pal Singh  2008 
 - viii, 192 p. : ill. ; 24 cm 
<br/><br/><label>ISBN: </label>9788121106757 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental sciences<br/>Environmental sciences - India
<br/><br/><label>Dewey Class. No.: </label>581 NEG