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Significant Accounting Policies (Tables)
3 Months Ended
Jul. 31, 2016
Accounting Policies [Abstract]  
Dilutive Securities
  July 31, 2016   July 31, 2015
Stock options   3,083,667     3,058,667
Warrants   5,855,400     1,614,400
  TOTAL POSSIBLE DILUTION   8,939,067     4,673,067