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Note 6 - Equity-accounted Investment (Tables)
6 Months Ended
Jan. 31, 2020
Notes Tables  
Equity Method Investments [Table Text Block]
Balance, July 31, 2019
  $
8,680,449
 
Share of loss from URC
   
(692,880
)
Gain on ownership interest dilution
   
3,056,656
 
Translation loss
   
(49,542
)
Balance, January 31, 2020
 
$
10,994,683