Ummarkutty A N P, . (1973). Indian Samudram. Trivandrum: State insitute of languages; Trivandrum.
Ummarkutty A N P, . 1973. Indian Samudram. Trivandrum: State insitute of languages; Trivandrum.
Ummarkutty A N P, . Indian Samudram. Trivandrum: State insitute of languages; Trivandrum. 1973.