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Note 9 - Assets Available for Sale (Tables)
9 Months Ended
Aug. 31, 2016
Notes Tables  
Disclosure of Long Lived Assets Held-for-sale [Table Text Block]
 
 
August 31, 2016
 
 
November 30, 2015
 
Ames, Iowa production facility
  $ -     $ 1,093,632  
Monona, Iowa storage building
    -       36,942  
Ames, Iowa powder coat paint system
    114,858       114,858  
    $ 114,858     $ 1,245,432