1. The histology of race non-specific resistance to Puccinia hordei Otth. in barley;Clifford,1972
2. The construction and operation of a dew simulation chamber;Clifford;New Phytologist,1973
3. The relation between compatible and incompatible infection sites of brown rust (Puccinia hordei) in four varieties of spring barley;Clifford;Annual report of the Welsh Plant Breeding Station,1973
4. A settling tower for quantitative inoculation of leaf blades of mature small grain plants with uredospores;Eyal;Phytopathology,1968
5. Identification and possible origin of a race of Puccinia strii-formis isolated in 1966;Macer;Nature, London,1966