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Note 4 - Leases - Lease Cost (Details) - USD ($)
12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Finance lease – amortization of ROU asset $ 100,728 $ 49,640
Finance lease – interest on lease liability 8,164 4,806
Operating lease expense 56,286 36,936
Lease, Cost, Total $ 165,178 $ 91,382