http://nla.gov.au/nla.obj-2898943948
Graddon, D. J & Tasmania. Department of Primary Industry and Fisheries, issuing body. (1994). A survey of Tasmanian onions for infestation with stem & bulb nematode, Ditylenchus dipsaci (Kuhn) Filipjev Retrieved December 10, 2025, from http://nla.gov.au/nla.obj-2898943948
Graddon, D. J and Tasmania. Department of Primary Industry and Fisheries, issuing body. A survey of Tasmanian onions for infestation with stem & bulb nematode, Ditylenchus dipsaci (Kuhn) Filipjev Hobart, Tasmania: Department of Primary Industry and Fisheries, 1994. Web. 10 December 2025 <http://nla.gov.au/nla.obj-2898943948>
Graddon, D. J & Tasmania. Department of Primary Industry and Fisheries, issuing body. 1994, A survey of Tasmanian onions for infestation with stem & bulb nematode, Ditylenchus dipsaci (Kuhn) Filipjev Department of Primary Industry and Fisheries, Hobart, Tasmania viewed 10 December 2025 http://nla.gov.au/nla.obj-2898943948
{{Citation
| author1=Graddon, D. J.
| author2=Tasmania. Department of Primary Industry and Fisheries, issuing body.
| title=A survey of Tasmanian onions for infestation with stem & bulb nematode, Ditylenchus dipsaci (Kuhn) Filipjev
| year=1994
| section=1 online resource (23 unnumbered pages) : colour illustrations, map.
| location=Hobart, Tasmania
| publisher=Department of Primary Industry and Fisheries
| url=http://nla.gov.au/nla.obj-2898943948
| id=nla.obj-2898943948
| access-date=10 December 2025
| via=Trove
}}
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