Kleinau, K., & Somasundaran, K. (1973). Telephone pratishtapanam. State Institute of languages.
Chicago Style aipamenaKleinau, Karl-Heinz, and K. Somasundaran. Telephone Pratishtapanam. Trivandrum: State Institute of languages, 1973.
MLA aipamenaKleinau, Karl-Heinz, and K. Somasundaran. Telephone Pratishtapanam. State Institute of languages, 1973.
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