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1877. The best-selling arithmetic books of the 1800s. Ray's Arithmetics are organized in an orderly manner around the discipline of arithmetic itself. The present principles and follow up each one with examples which include difficult problems to challenge the best students.
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1877. The best-selling arithmetic books of the 1800s. Ray's Arithmetics are organized in an orderly manner around the discipline of arithmetic itself. The present principles and follow up each one with examples which include difficult problems to challenge the best students.
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