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Note 8 - Investments in Equity Securities (Tables)
6 Months Ended
Jan. 31, 2024
Notes Tables  
Debt Securities, Trading, and Equity Securities, FV-NI [Table Text Block]

Balance, July 31, 2023

 $38,656 

Dispositions

  (3,008)

Additions

  5,548 

Gain on revaluation of equity securities

  37,389 

Foreign exchange difference

  (2)

Balance, January 31, 2024

 $78,583