TY - BOOK AU - Yadav, R.L TI - Analysis of Eco-Regional Production Constraints In Rice-Wheat Cropping System U1 - 631.58 Y-1A PY - 1998/// CY - Meerut PB - Project Directorate For Cropping Systems Research KW - CROPPING SYSTEMS -- INDIA KW - MULTIPLE CROPPING KW - REICE RESEARCH KW - ROTATION OF CROPS -- RESEARCH KW - WHEAT RESEARCH ER -