El mercado determina moneda, catálogo y pagos, sin cambiar el idioma.
English
One of a series of books published by the Silver Burdett Company. This is Modern Arithmetic Through Discovery--Book One (1), which is a workbook. Another workbook, also published by SBC, would follow. There also was Grades 3 through 6, and one of the books appeared on "The Brady Bunch" in 1969!
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