Last updated: 12/24/2007 10:46 PM
Yantra ~
http://www.rudraksha-ratna.com/yantra.htm?gclid=CLrt56_csJACFQE4TAodS0-M5g
http://images.google.co.in/images?q=Yantra&hl=en&um=1&ie=UTF-8&sa=X&oi=images&ct=title
http://www.yantrashastra.com/
http://www.sanatansociety.org/yoga_and_meditation/yantra_meditation.htm
http://en.wikipedia.org/wiki/Yantra