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4. Property, Plant and Equipment: Property, Plant and Equipment (Details) - USD ($)
May 31, 2019
Aug. 31, 2018
Details    
Office equipment $ 478,419 $ 473,702
Warehouse equipment 1,248,532 1,313,714
Buildings 4,072,741 4,090,527
Land 559,065 761,924
Property, Plant and Equipment, Gross 6,358,757 6,639,867
Accumulated depreciation property plant and equipment (3,607,699) (3,534,607)
Net book value $ 2,751,058 $ 3,105,260