@book{ BB21314642, author = "Subrahmanyam, P. S.", title = "Dravidian verb morphology : a comparative study", publisher = "Annamalai University", year = "1971", series = "Publication / Department of Linguistics, Annamalai University", number = "no. 24", URL = "https://ci.nii.ac.jp/ncid/BB21314642" }