Thank you for viewing. This is a set sale of the following two books: ・Encyclopedia of Electricity ・Encyclopedia of Modern Science Common Sense 【Product Condition】 ・Used, Good Condition ・Clean condition with no problems for reading ・No noticeable stains or writing ・Slight scratches on the cover The contents cover from basic to practical knowledge, and these two books are very useful for those interested in the mechanisms of science and electricity, as well as for learning and research. Instant purchase welcome. We will pack carefully and ship. #aki's_interesting_shop