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7. WARRANTS (Details Narratives) - Warrants - $ / shares
12 Months Ended
Apr. 30, 2016
Apr. 30, 2015
Apr. 30, 2014
Warrants outstanding 273,280    
Warrants outstanding exercise price $ 2.47    
Warrants issued 0 0 0
Warrants exercised 0 0 0
Warrants exercisable through date Aug. 30, 2018