| 1 | |
| Researcher: | Choudhary, Devendra |
| Guide: | Mohan, Devendra |
| University: | Jain Narain Vyas University |
| Language: | English |
| 2 | |
| Researcher: | Choudhary, Devendra Prasad |
| Guide: | Dutta, J S |
| University: | Tilka Manjhi Bhagalpur University |
| Language: | English |
| 3 | functional patterns of commercial classes in Panjab, 1881-1912 |
| Researcher: | Choudhary, Devendra Kumar |
| Guide: | Kumar, Ravinder |
| University: | University of Delhi |
| Language: | English |
| 4 | Functional patterns of the commercial classes in the Punjab (1881-1912) |
| Researcher: | Choudhary, Devendra Kumar |
| Guide: | Ravinder Kumar |
| University: | University of Jammu |
| Language: | English |