1. Relationships among three isolates of barley yellow dwarf virus;Aapola;Virology,1971
2. Chlorotic streaking in Italian ryegrass;Catherall;Plant Pathol.,1974
3. Positive infectivity neutralization reactions between isolates of beet western yellows virus and antisera against barley yellow dwarf virus;Duffus,1973
4. Development of infection with beet western yellows virus in the sugarbeet;Esau;Virology,1972
5. Transmission of barley yellow dwarf virus isolates from Manitoba by five species of aphids;Gill;Phytopathology,1967