| 1 | Kalidas ki kritiyo mein dhawani pramukh vayakhyo ke aadhar par |
| Researcher: | Tyagi, Sushil |
| Guide: | Tyagi, Sushil |
| University: | University of Delhi |
| Language: | English |
| 2 | |
| Researcher: | Tyagi, Sushil Kumar |
| Guide: | Sharma, R P |
| University: | University of Delhi |
| Language: | English |
| 3 | Geo-environmental studies in arts of a mountainous watershed Kumaun Himalaya, India |
| Researcher: | Tyagi, Sushil Kumar |
| University: | University of Roorkee |
| Language: | English |
| 4 | Geo-environmental studies in parts of a mountainous watershed , Kumaun Himalaya,India |
| Researcher: | Tyagi, Sushil Kumar |
| Guide: | Anbalagan, RSinghal, D C |
| University: | University of Roorkee |
| Language: | English |