2011 - | Emeritus Professor | YCCSA and Department of Biology, University of York |
2004 - 2011 | Professor | Department of Biology, University of York |
1996 - 2004 | Reader | Department of Biology, University of York |
1983 - 1996 | Lecturer | Department of Biology, University of York |
1975 - 1983 | Lecturer | Department of Botany, Sheffield University |
1974 - 1975 | Research Fellow | University College North Wales |
1975 | PhD | University of Liverpool |
1971 | BA | University of York |
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