| 1 | Study of Northern black polished ware culture: (An iron age culture of India) |
| Researcher: | Ray, Tribhuwan Nath |
| University: | Banaras Hindu University |
| Language: | English |
| 2 | Study of Northen Black Polished Ware(NBP) culture: an iron age culture of India |
| Researcher: | Roy, Tribhuwan Nath |
| Guide: | Sinha, K K |
| University: | Banaras Hindu University |
| Language: | English |