| 1 | Geology^bGeochemistry and Genesis of phosphorite from parts of Nallamalai Belt Cuddapah Basin India |
| Researcher: | Lakshmana Rao, P |
| University: | Andhra University |
| Language: | English |
| 2 | |
| Researcher: | Prabhakara Rao, A |
| University: | Andhra University |
| Language: | English |