I'm selling these books because my child no longer reads them. There are no markings, but there is some wear and sun damage on the corners, so please be aware of this before purchasing. Survival in the Human Body, Volumes 1 & 2 Survival in the Robot World, Volumes 1 & 2 Survival in the Underground World, Volumes 1 & 2 Survival in Extreme Weather, Volumes 1 & 2 Survival in the Natural History Museum, Volumes 1 & 2 Survival in Space, Volume 1 Survival in the Deep Sea Survival in the Warring States Period Survival in the Amazon Survival in an Earthquake Survival in the Mountains - Series Name: Survival Series - Number of Volumes: 16 - Condition: Slightly used Thank you for looking.