| |
| Radhakrishnan, R. 1963. Tamil numerals. Indian linguistics 24. 87-110. |
| |
| Raichling, A.J.B.N. et al. 1977. Lingua: Questionnaire. Amsterdam: North Holland. |
| |
| Ramaswami Aiyar, L.V. 1929. Plosives in Dravidian. Indian Antiquary 58. 34-38. |
| |
Rangan, K, 1971. Negation in Tamil. Papers and talks, ed. by H.S. Biligiri. Mysore: Central Institute of Indian Languages. 9-20. |
| |
| __________ 1979. Purki grammar. Mysore: Central Institute of Indian Languages. |
| |
Rangan, K and B. Mallikarjun. 1981. Causative constructions in Kannada. Papers in Linguistics: A felicitation volume, by, M.S. Sunkapur and J.S. Kulli. Mysore: Sharat Prakashana. |
| |
Richter, G. 1887. Ethnographical compendium of the castes and tribes found in the province of Coorg with a short description of those peculiar to Coorg. Bangalore: Morning Star Press. |
| |
| Rivers, W.H.R. 1906. The Todas. London: Macmillan. |
| |
Saktivel, S. 1977. Phonology of Toda with vocabulary. Annamalainagar: Annamalai University. |
| |
__________ 1978. A grammar of the Toda language. Annamalainagar: Annamalai University. |
| |
| Sapir, Edward. 1921. Language. New York: Harcourt, Brace and World |
| |
| __________ 1925. Sound patterns in language. Language 1. 37-51. |
| |
