Letter from K.G. Subramanyan to Jyoti Basu, 3 December 1977
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Letter from K.G. Subramanyan to Jyoti Basu, 3 December 1977

1977
Letter from K.G. Subramanyan to Buddhadev Bhattacharjee, 1 January 1978
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Letter from K.G. Subramanyan to Buddhadev Bhattacharjee, 1 January 1978

1978
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Letters between P.K. Banerjee and K.G. Subramanyan, February to March 1978

1978
Letter from K.G. Subramanyan to L.P. Sihare, 5 November 1981
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Letter from K.G. Subramanyan to L.P. Sihare, 5 November 1981

1981
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Letters between K.G. Subramanyan and L.P. Sihare, September 1981

1981
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Letter from P.K. Dasgupta to L.P. Sihare, 18 January 1982

1982