@Book chapter{b1000001089170, author = "UrbaƄska, Hanna", title = "The Siddha concept of arul/irul in the service of politics : how the vision of backwaters defined by Narayana Guru in "Siva Satakam" 65 by means of the poli-ali-culi trio could become the metaphysical reflection of the social and religious transformation implemented within Kerala's body ", publisher = "", year = "" }