Velayudhan P. S., . (1966). Brief history of the world, Part 1. Madras: S Viswanathan.
Velayudhan P S, . 1966. Brief history of the world, Part 1. Madras: S Viswanathan.
Velayudhan P S, . Brief history of the world, Part 1. Madras: S Viswanathan. 1966.
