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3. Accounts Receivable
 12 Months Ended
Mar. 31, 2013
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]  
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]
3.                   Accounts Receivable

The following table sets forth the components of accounts receivable:

   
March 31,
 
   
2013
   
2012
 
Government
 
$
423,165
   
$
1,272,436
 
Commercial
   
153,654
     
457,670
 
Less: Allowance for doubtful accounts
   
(18,940
)
   
(35,470
)
   
$
557,879
   
$
1,694,636