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10. WARRANTS (Tables)
9 Months Ended
Jan. 31, 2013
Warrants Tables  
Schedule of Warrants
Date Issued   Warrants
Outstanding
  Exercise Price
Per Share
  Expiration Date
December 19, 2008   101,523     $1.4775     December 19, 2013
August 30, 2012 (Note 7)   273,280     $2.4700     August 30, 2018
   Total Warrants Outstanding   374,803