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Kurnianingsih, Sri. (2010). Mathematics 2B for senior high school grade XI semester 2 . Jakarta: ESIS.

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Kurnianingsih, Sri. Mathematics 2B for senior high school grade XI semester 2. Jakarta: ESIS, 2010. Text.

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Kurnianingsih, Sri. Mathematics 2B for senior high school grade XI semester 2. Jakarta: ESIS, 2010. Text.

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Kurnianingsih, Sri. Mathematics 2B for senior high school grade XI semester 2. Jakarta: ESIS, 2010. Print.