| 1 | |
| Researcher: | Benjamin, D |
| Guide: | Pillai, P V Velayudhan |
| University: | University of Kerala |
| Language: | English |
| 2 | Economics of Heather industry of Tamil Nadu with special emphasis on East India Heathers |
| Researcher: | Benjamin, R Edward |
| Guide: | Gajalakshmi, M |
| University: | Madurai Kamaraj University |
| Language: | English |