The Abandoned Edge of Avalon (YA - Sample) (The Slivers of Avalon (YA) Book 1)
Eden Tyler
Chip's Challenge - Levels with Difficulty 2: A Sample of Things to Come, Abandoned Mines, All about Blocks, Amsterdam, and Then There Were... Four?, a
Source Wikia
Chemical Data for Rock, Sediment, Biological, Precipitate, and Water Samples from Abandoned Copper Mines in Prince William Sound, Alaska: Open-File Report 2007-1359
Randolph A. Koski