Pesticides and Nitogen Cylcle - Rup Lal; Sukanya Lal (Boca Raton CRC Press Inc, 1988)
Rup Lal & Sukanya Lal: Pesticides and Nitogen Cylcle. Boca Raton. CRC Press Inc, 1988. 0-8493-4351-8--(589.95LAL)
ENGLISH