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Note 3 - Inventory
12 Months Ended
Nov. 30, 2014
Notes to Financial Statements  
Inventory Disclosure [Text Block]
(3)      
Inventories
 
Major classes of inventory are:
 
 
 
November 30, 2014
 
 
November 30, 2013
 
Raw materials
  $ 10,037,055     $ 10,322,014  
Work in process
    467,110       511,016  
Finished goods
    8,504,062       7,305,301  
    $ 19,008,227       18,138,331  
Less: Reserves
    (3,918,947 )     (3,215,806 )
    $ 15,089,280     $ 14,922,525