TY  - BOOK
AU  - Singh V K
AU  - Dwivedi B S
AU  - Sharma S K
AU  - Singh V K
TI  - Modern technlogies for rice-wheat production systems in India PDCSR Technical  Bulletin No. 2004-1
PY  - 2004///
CY  - Meerut
PB  - Cropping systems research ICAR
ER  -