Snowball Earth = SNOW BALL EARTH. Volumes 1-4 ・After purchase, I stored these in a dark place as part of my collection, so I don't think there are any noticeable signs of yellowing. However, since they were stored by a private individual, please refrain from purchasing if you are overly concerned about the condition. Please note that these are not first editions. Please only purchase if you understand that these items have been handled by another person. There is some yellowing, so please refrain from purchasing if you are sensitive to this. ※ Not sold separately ※ Immediate purchase OK