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Recoverable taxes
12 Months Ended
Dec. 31, 2020
Disclosure of Recoverable taxes [Abstract]  
Recoverable taxes
8.Recoverable taxes

 

  December 31,
  2 0 2 0   2 0 1 9
           
Value Added Tax $ 534,760   $ 781,082
Income Tax   494,603     185,243
Other   445     445
  $ 1,029,808   $ 966,770