E.D. Drown collection => Philadelphia Academy of Natural Sciences
Photo:
Norsk Bergverksmuseum
E.D. Drown collection => Philadelphia Academy of Natural Sciences
Photo:
Norsk Bergverksmuseum
E.D. Drown collection => Philadelphia Academy of Natural Sciences
Photo:
Norsk Bergverksmuseum
E.D. Drown collection => Philadelphia Academy of Natural Sciences
Photo:
Norsk Bergverksmuseum