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Note 5 - Inventory
 3 Months Ended
Feb. 28, 2017
Notes to Financial Statements  
Inventory Disclosure [Text Block]
5)
Inventory
 
Major classes of inventory are:
 
 
 
February 28, 2017
 
 
November 30, 2016
 
Raw materials
   $
8,532,655
    $
8,568,624
 
Work in process
    
440,902
     
509,198
 
Finished goods
    
6,898,083
     
7,054,736
 
    $
15,871,640
    $
16,132,558
 
Less: Reserves
    
(2,638,263
 )    
(2,603,206
 )
    $
13,233,377
    $
13,529,352