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Note 6 - Equity-accounted Investment (Tables)
3 Months Ended
Oct. 31, 2019
Notes Tables  
Equity Method Investments [Table Text Block]
Balance, July 31, 2019
  $
8,680,449
 
Share of loss from URC
   
(669,227
)
Gain on ownership interest dilution
   
328,630
 
Translation loss
   
(9,894
)
Balance, October 31, 2019
 
$
8,329,958