| 1 | |
| Researcher: | Rajasekharan, M |
| Guide: | Govindaraja, S |
| University: | Annamalai University |
| 2 | Trade union movement in travancore since early 20th century till 1947 |
| Researcher: | Rajasekharan Nair, C G |
| Guide: | Mohamed Koya, S M |
| University: | University of Calicut |
| Language: | English |