I purchased this used, in good condition, several years ago, read it once, and then left it untouched, so in my subjective opinion, the contents are clean. The cover has some scratches and signs of use, so I've marked it as having some minor scratches and dirt. Please understand that this is a used item. "Readable Code: Simple and Practical Techniques for Writing Better Code" Dustin Boswell / Trevor Foucher / Yukinori Sumi Price: ¥2400 #DustinBoswell #Dustin_Boswell #TrevorFoucher #Trevor_Foucher #YukinoriSumi #Yukinori_Sumi #Book #Computer/Computer