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Note 13 - Loss Per Share (Tables)
 3 Months Ended
Oct. 31, 2020
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
   
Three Months Ended October 31,
  
   
2020
    
2019
  
Numerator
  
 
 
 
  
 
 
 
Net Loss for the Period
  
$
(4,963,537
)
   $
(5,042,577
 )
                 
Denominator
  
 
 
 
  
 
 
 
Basic Weighted Average Number of Shares
  
 
189,955,499
     
181,240,702
  
Dilutive Stock Options, RSUs, PRSUs and Warrants
  
 
-
   
 
-
 
Diluted Weighted Average Number of Shares
  
 
189,955,499
     
181,240,702
  
                 
Net Loss per Share, Basic and Diluted
  
$
(0.03
)
   $
(0.03
 )