Petrochemical Industries
| Set / Name of Stamp | Date of Issue | Denomination | Image |
|---|---|---|---|
| Inauguration of Gauhati Oil RefineryJanuary 1, 1962 | January 1, 1962 | 15 nP |   |
| Set / Name of Stamp | Date of Issue | Denomination | Image |
|---|---|---|---|
| Inauguration of Gauhati Oil RefineryJanuary 1, 1962 | January 1, 1962 | 15 nP | |