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Note 4 - Inventory
6 Months Ended
May. 31, 2015
Notes to Financial Statements  
Inventory Disclosure [Text Block]
4)
Inventory
 
Major classes of inventory are:
 
 
 
May 31, 2015
 
 
November 30, 2014
 
Raw materials
  $ 10,440,327     $ 10,037,055  
Work in process
    553,631       467,110  
Finished goods
    8,684,721       8,504,062  
    $ 19,678,679     $ 19,008,227  
Less: Reserves
    (3,707,422 )     (3,918,947 )
    $ 15,971,257     $ 15,089,280