Quarterly report pursuant to Section 13 or 15(d)

D. ACCOUNTS RECEIVABLE (Tables)

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D. ACCOUNTS RECEIVABLE (Tables)
3 Months Ended
Mar. 31, 2014
Accounts Receivable Additional Disclosures [Abstract]  
Accounts Receivable
    March 31,
2014
    December 31,
2013
 
Accounts receivable   $ 1,419,899     $ 1,816,722  
Allowance for doubtful accounts     (39,434 )     (156,966 )
Accounts receivable, net   $ 1,380,465     $ 1,659,756