Dravidian and Negro-African : ethno-linguistic study on their origin, diffusion, and prehistoric contacts, and common cultural and linguistic heritage /
Uliyar Padmanabha Upadhyaya, Susheela P. Upadhyaya.
- Udupi, Karnataka, India : Published by Samshodhana Prakashana on behalf of Rastrakavi Govind Pai Research Institute, 1983.
- ix, 122 p. ;