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Note 7 - Payroll Liabilities - Schedule of Payroll Liabilities (Details) - USD ($)
Jun. 30, 2020
Dec. 31, 2019
Accrued bonuses $ 374,282 $ 646,064
Accrued vacation 182,152 170,820
Accrued payroll 98,974 82,536
Total payroll liabilities $ 655,408 $ 899,420