![Ravinthirakumaran Navaratnam|Navaratnam R, N.Ravinthirakumaran](/pictures/42/4973854.jpg)
Ravinthirakumaran Navaratnam|Navaratnam R, N.Ravinthirakumaran
AD Scientific Index 2024
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வவுனியாப் பல்கலைக்கழகம்වවුනියා විශ්වවිද්යාලය
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