"Comprehensive Elementary Study: Understand Social Studies" Price: ¥2,600 "Comprehensive Elementary Study: Understand Science" Price: ¥2,600 A set of science and social studies reference books for elementary school students in grades 4-6. - Title: Understand Science - Title: Understand Social Studies - Target Grade Level: Elementary Grades 4-6 - Publisher: Obunsha Thank you for viewing. The contents are relatively clean, but there are scratches and stains overall. The covers have tears, etc. Please check the photos. I would like to sell these to someone who can make use of them. Please understand that these are used items stored at home before purchasing.