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Note 5 - Accounts Payable and Accrued Expenses (Tables)
6 Months Ended
Jun. 30, 2023
Notes Tables  
Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]
  

June 30,

2023

  

December 31,

2022

 
         

Accounts payable

 $183,192  $224,716 

Accrued fees and expenses

  11,916   51,869 
  $195,108  $276,585