| 1 | |
| Researcher: | Abrol, Prem Kumar |
| University: | University of Allahabad |
| Language: | English |
| 2 | |
| Researcher: | Pandey, Prem Kumar |
| Guide: | Patel, G N |
| University: | Guru Ghasidas University |
| Language: | Hindi |
| 3 | Pracheen Bhartiya krishi evam tajjanit samasyaon ka adhyayan 200 B C to 300 A D |
| Researcher: | Singh, Prem Kumar |
| University: | Babasaheb Bhimrao Ambedkar Bihar University |
| Language: | English |