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Some writing in Lesson 1-8 with pencil, only some problems answered. Lesson 9-18 are clean.Lessons 19-45 have writing in pencil, not every answer, some pages only a few answers.Lessons 29-31 are written in pen. Lessons 46-119 are clean.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.