TY - PRO AU - Lister,R.M. AU - Clement,D. AU - Skaria,M.Foster,J.E. TI - Biological differences between barley yellow dwarf virus in relation to their epidemiology and host reactions U1 - 633.11 PY - 1984/// CY - Mexico, DF (Mexico) PB - CIMMYT|UNDP KW - Aphids KW - Barley KW - Barley yellow dwarf virus KW - Disease transmission KW - Epidemiology KW - Hosts KW - Vectors KW - Viroses KW - Barley yellow mosaic virus ER -