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Note 13 - Loss Per Share - Weighted Average Number of Shares Used in the Calculation of the Basic and Diluted Loss Per Share (Details) - USD ($)
3 Months Ended
Oct. 31, 2019
Oct. 31, 2018
Net loss for the period $ (5,042,577) $ (3,451,426)
Basic Weighted Average Number of Shares (in shares) 181,240,702 166,397,293
Dilutive Stock Options, Warrants, RSUs and PRSUs (in shares)
Diluted Weighted Average Number of Shares (in shares) 181,240,702 166,397,293
NET LOSS PER SHARE, BASIC AND DILUTED (in dollars per share) $ (0.03) $ (0.02)