Thank you for viewing. This is a chemistry reference book with 274 carefully selected problems, perfect for entrance exam preparation. - Title: Chemistry Important Problem Collection - Chemistry Basics & Chemistry - Published: 2014 - Price: 890 yen (excluding tax) - Number of problems: 274 - Contents: Includes A problems, B problems, and supplementary problems at the end There are no folds. There is some writing (tally marks). I have tried to look carefully, but I apologize if I missed anything. This is a used book, so please consider carefully if you are concerned.