[02-05] The Clay Seams (Horsebacks) in the Number 5 Coal Bed, Near Springfield, Illinois
The Clay Seams (Horsebacks) in the Number 5 Coal Bed, Near Springfield, Illinois Author: Savage, T.E.
The Clay Seams (Horsebacks) in the Number 5 Coal Bed, Near Springfield, Illinois Author: Savage, T.E.