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form10-k.htm
ex10-21.htm
ex21-1.htm
ex31-1.htm
ex31-2.htm
ex32-1.htm
ex32-2.htm
Consolidated Statement of Cash Flows (Parenthetical)
12 Months Ended
Apr. 30, 2020
USD ($)
Statement of Cash Flows [Abstract]
Amortization of right-of-use assets
$ 585,490