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Note 4 - Inventory
9 Months Ended
Aug. 31, 2015
Notes to Financial Statements  
Inventory Disclosure [Text Block]
 
4)
Inventory
 
Major classes of inventory are:
 
 
 
August 31, 2015
 
 
November 30, 2014
 
Raw materials
  $ 10,521,170     $ 10,037,055  
Work in process
    444,320       467,110  
Finished goods
    9,116,182       8,504,062  
    $ 20,081,672     $ 19,008,227  
Less: Reserves
    (3,588,106 )     (3,918,947 )
    $ 16,493,566     $ 15,089,280