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Inventories
9 Months Ended
Jan. 31, 2012
Notes to Financial Statements  
Inventories

Components of inventories are as follows:

 

 

January 31,

2012

April 30,

2011

 

 

 

Raw materials   $74,346 $56,901
Work-in-process       8,780   17,957
Finished goods       8,235   12,006
    $91,361 $86,662