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Note B - Inventories, Net (Details Textual) - USD ($) | Mar. 31, 2020 | Jun. 30, 2019
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Inventory Valuation Reserves, Ending Balance | $ 1,880,000 | $ 1,106,000
SR CarnoSyn Powder [Member] |  |
Inventory Valuation Reserves, Ending Balance | $ 1,000,000 | $ 686,000

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