Australian Geographical Data - simple format (perhaps WKT)

I'm looking for some data on Australian boundaries - particularly the national boundary and individu开发者_高级运维al state boundaries. The format I would prefer is WKT but anything simple would be good (ideally I need to use it with the JTS (Java Topological Suite) package).

Thanks,

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I don't know if what you're after specifically is available, but here are a couple of good places to try:

• 'Geography' category on data.australia
• Geoscience Australia