Set of science problem books and answer keys published in 2022. - Title: Weekly Test Problem Collection, 5th Grade, Science Set (Volumes 1 & 2) - Answers and Explanations: Answers and Explanations - Publisher: Yotsuya Otsuka - Year of Publication: 2022 - Format: Problem Collection Thank you for viewing. The name has been erased with correction fluid. As shown in the photos, there is writing in pencil (on only one page). (Photo 2) It has been erased with an eraser (Photo 3), but some marks remain. (On only four pages) Photos 4, 5, 6, and 7. Please refrain from purchasing if you are sensitive or concerned about minor details. We do not accept any complaints or returns. Therefore, please make your purchase decision at your own discretion.