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9. WARRANTS (Tables)
6 Months Ended
Oct. 31, 2013
Warrants and Rights Note Disclosure [Abstract]  
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 6)   273,280   $2.4700   August 30, 2018
   Total Warrants Outstanding   374,803