Venkatachar B. E., . (1968). Proceedings of the Indian Academy of Sciences Vol-LXVII. : .
Venkatachar B.S Ed, . 1968. Proceedings of the Indian Academy of Sciences Vol-LXVII. : .
Venkatachar B.S Ed, . Proceedings of the Indian Academy of Sciences Vol-LXVII. : . 1968.