Pesticides and nitrogen cycle / 
edited Rup Lal and Sukanya Lal. 
 - Boca Raton, Florida :  CRC Press,  1988. 
 - 3 v. :  ill. ;  26 cm. 
<br/><br/><label>ISBN: </label>084934350X (set) 
<br/><br/><label>LCCN: </label>88901402 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pesticides--Environmental aspects--Collected works.<br/>Nitrogen cycle--Collected works.