![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
An early oil refinery
by Christian J. Walter (1872-1938).
At Penn State University, Earth and Mineral Sciences, Steidle collection.
_____________________________________________________________
P1000815 SPDefault IvCrop20,80,4522,3316 Half IvSharp10 IvQ85
comment | |