1. Isolation of Olpidium brassicae from roots of lettuce showing big-vein symptoms;Barr;Plant Disease Reptr.,1960
2. Virology;Cadman;Ann. Rept. Scot. Hort. Research Inst. 8th,1961
3. The relationship of Olpidium brassicae (Wor.) Dang. to the big-vein disease of lettuce;Fry;New Zealand J. Agr. Research,1958
4. The association of Olpidium with the big-vein disease of lettuce;Grogan;Phytopathology,1958
5. Studies on Olpidium brassicae (Wor.) Dang;Jacobsen;Contribs. Dept. Plant Pathol. Roy. Vet. and Agr. Coll. Copenhagen,1943