Note 9 - Accounts Payable and Accrued Expenses: Schedule of Accounts Payable and Accrued Liabilities (Details) - USD ($)	Apr. 30, 2017	Apr. 30, 2016
Details
Accounts Payable	$ 5,096,599	$ 4,869,026
Customer Advances, Current	40,900	10,042
Accrued salary payable	160,244	105,131
Taxes Payable, Current	121,127	254,615
Deferred Revenue	82,581	71,604
Accounts Payable, Other, Current	1,535,020	1,550,408
Accounts Payable and Accrued Liabilities, Current	$ 7,036,471	$ 6,860,826