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Note 3 - Property and Equipment (Tables)
3 Months Ended
Sep. 30, 2016
Notes Tables  
Property, Plant and Equipment [Table Text Block]
   
September 30,
2016
   
June 30,
2016
 
Machinery and equipment
  $ 2,222,670     $ 2,222,670  
Buildings and structures
    401,470       401,470  
Computers and office equipment
    171,560       173,313  
      2,795,700       2,797,453  
Less accumulated depreciation
    (2,791,943 )     (2,793,194 )
    $ 3,757     $ 4,259