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The greatest contribution to Siddha medicine in last century, The Tamil to English Dictionary of Medicine - Chemistry, Botany and Allied Sciences edited by Thanjavur Vilvayyaa mannaiyaar Sambasivam Pillai @
TV Sambasivam Pillai (சாம்பசிவம் பிள்ளை சித்த மருத்துவ அகராதி) extends More than 6000 pages having detailed description for almost all terms used in Siddha Medicine and other allied sciences
is on public domain now!