https://www.ogssi.org/medals/dr-premalatha-ramachandran-medal 2026-10-16 https://www.ogssi.org/medals/dr-n-hephzibah-k-medal 2026-10-05 https://www.ogssi.org/medals/mrs-mangalam-kasirajan-medal 2026-10-16 https://www.ogssi.org/medals/mrs-t-rajarathinam-medal 2026-10-16