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4. Property, Plant and Equipment: Property, Plant and Equipment (Details) (USD $)
May 31, 2013
Aug. 31, 2012
Details    
Office equipment $ 565,232 $ 491,470
Warehouse equipment 1,433,335 1,343,311
Buildings and Improvements, Gross 2,382,448 2,362,555
Land 761,924 818,072
Property, Plant and Equipment, Gross 5,142,939 5,015,408
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment (3,147,294) (3,018,299)
Property, plant and equipment, net $ 1,995,645 [1] $ 1,997,109 [1]
[1] Note 4