TY  - BOOK
AU  - Singh, S.T.
TI  - Agro diversity and cropping patern: Issues and challenges 
SN  -  9788131306512
AV  - S602.5.S5 2009 
PY  - 2009///
CY  - New Delhi
PB  - APH
KW  - Croppping systems
KW  - Agriculture
KW  - Economic aspects
ER  -