Vasudevan Nair R., . (1971). Sasya vargeekarantatwangal. : State Institute of Languages.
Vasudevan Nair R, . 1971. Sasya vargeekarantatwangal. : State Institute of Languages.
Vasudevan Nair R, . Sasya vargeekarantatwangal. : State Institute of Languages. 1971.