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Note 5 - Inventory
9 Months Ended
Aug. 31, 2016
Notes to Financial Statements  
Inventory Disclosure [Text Block]
5)
Inventory
 
Major classes of inventory are:
 
 
 
August 31, 2016
 
 
November 30, 2015
 
Raw materials
  $ 8,767,407     $ 9,699,156  
Work in process
    397,356       246,823  
Finished goods
    7,432,855       8,169,267  
    $ 16,597,618     $ 18,115,246  
Less: Reserves
    (2,930,749 )     (2,930,810 )
    $ 13,666,869     $ 15,184,436