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(4) Inventory
3 Months Ended
Feb. 29, 2012
Notes To Financial Statements  
Inventory Disclosure [Text Block]
(4)           Inventory
 
Major classes of inventory are:
 
   
February 29, 2012
   
November 30, 2011
 
Raw materials
  $ 8,689,238     $ 7,623,095  
Work in process
    555,402       394,158  
Finished goods
    7,881,430       7,982,192  
    $ 17,126,070     $ 15,999,445  
Less: Reserves
    (2,746,509 )     (2,750,340  
    $ 14,379,561     $ 13,249,105