Quarterly report pursuant to Section 13 or 15(d)

D. ACCOUNTS RECEIVABLE (Details)

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D. ACCOUNTS RECEIVABLE (Details) (USD $)
Mar. 31, 2014
Dec. 31, 2013
Components of accounts receivable    
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