| 1 | |
| Researcher: | Singh, Devendra |
| Guide: | Dahiya, S B |
| University: | Maharshi Dayanand University |
| Language: | English |
| 2 | |
| Researcher: | Singh, Devendra |
| Guide: | Gupta, B R s |
| University: | Dr Bhimrao Ambedkar University |
| Language: | English |
| 3 | Determination of replacement among major crops in India through simultaneous equation systems |
| Researcher: | Singh, Devendra K |
| Guide: | Sharma, J S |
| University: | University of Agricultural Sciences |
| Language: | English |