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1.

図書
図書
1. Language conflict and national development : group politics and national language policy in India
Jyotirindra Das Gupta
出版情報: Berkeley : University of California Press, 1970
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2.

図書
図書
2. Language problems of developing nations
ed. by Joshua A. Fishman, Charles A. Ferguson and Jyotirindra Das Gupta
出版情報: New York : Wiley, c1968
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