TY  - GEN
AU  - ABROL, Y P
AU  - RAGHURAM, N
TI  - AGRICULTURAL NITROGEN USE & ITS ENVIRONMENTAL IMPLICATIONS
U1  - 577.145 ABR/AG 
CY  - NEW DELHI, IK INTERNATIONAL PUBLISHING HOUSE
KW  - NITROGEN USE EFFICIENCY IN CROP ECOSYSTEMS
KW  - NITROGEN USE,FLOWS AND CYCLING IN AGRICULTURAL SYSTEMS
ER  -