TY  - BOOK
AU  - Abrol, Y.P.  .
TI  - Agricultural nitrogen use & its environmental implications / 
SN  - 978-81-89866-33-4
U1  - J(E150) 
PY  - 2007///
CY  - New Delhi : 
PB  - I.K. International Publishing House Pvt. Ltd , 
KW  - Environmental
ER  -