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Note 3 - Inventories
12 Months Ended
Nov. 30, 2012
Inventory Disclosure [Text Block]
(3)           Inventories

Major classes of inventory are:

   
November 30, 2012
   
November 30, 2011
 
Raw materials
  $ 8,466,060     $ 7,623,095  
Work in process
    632,969       394,158  
Finished goods
    7,694,528       7,982,192  
    $ 16,793,557       15,999,445  
Less: Reserves
    (2,466,075 )     (2,750,340 )
    $ 14,327,482     $ 13,249,105