Chopra, S L <br/><br/>
Analytical Agricultural Chemistry  Textual Documents 
by S.L.Chopra and J.S.Kanwar 
 - 4th ed 
 - Ludhiana  Kalyani Publishers  1999 
 - XV,500p.  ill  23cm 
<br/><br/><label>ISBN: </label>81-7096-444-X