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3. Discontinued Operations (Tables)
6 Months Ended
Jan. 31, 2018
Discontinued Operations and Disposal Groups [Abstract]  
Summary of gain (loss) and carrying amounts of major classes of assets and liabilities from discontinued operations
   Six Months Ended 
   January 31, 
   2018   2017 
         
Office and miscellaneous  $   $(498)
Gain on sale of investment       200,528 
Total Income       200,030 
           
Gain from Discontinued Operations, Net of Tax Benefits  $   $200,030