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Note 4 - Accounts Receivable, net
6 Months Ended
Sep. 30, 2019
Receivables [Abstract]  
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]

Note 4 – Accounts Receivable, net


The following table sets forth the components of accounts receivable:


   

September 30,

2019

   

March 31, 

2019

 

Government

  $ 1,072,508     $ 1,951,729  

Commercial

    236,886       251,870  

Less: Allowance for doubtful accounts

    (7,500

)

    (7,500

)

    $ 1,301,894     $ 2,196,099