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Contingent liabilities - Additional Information (Detail) | Jun. 30, 2018 AUD ($) | Jun. 30, 2018 EUR (€) | Jun. 30, 2017 AUD ($) | Jun. 30, 2017 EUR (€)
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Disclosure of contingent liabilities [abstract] |  |  |  |
Guarantee provided to confirm its commitment to the ongoing enforcement process | $ 394,073 | € 250,000 | $ 371,471 | € 250,000

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- Definition Guarantee deposits assets current. + References No definition available. + Details
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