Subhra Ranjan PSIR 2020/21:
https://drive.google.com/drive/u/0/mobile/folders/1DHg2rF8xgsLU1-tiydd4a75Ch0GXaHq3?usp=sharing
https://drive.google.com/folderview?id=1XwBZNldlJfuEA8lbOT8mb6zaGUhZjRkp
Subhra mam 2019 Latest Audio
PSIR Class Handouts and Handwritten notes
https://drive.google.com/drive/mobile/folders/1YfWK6_M20Y2FnPDy_ULGuwSzgtrLOVEZ?usp=drive_open