NLM Digital Collections

Search

Start Over Formats Still image ✖Remove constraint Formats: Still image Authors Hoover, Herbert Clark, 1874-1964, author/translator ✖Remove constraint Authors: Hoover, Herbert Clark, 1874-1964, author/translator

1. Three vertical shafts

Author(s):
Agricola, Georg, 1494-1555, author
Hoover, Herbert Clark, 1874-1964, author/translator
Publication:
London: The Mining Magazine, 1912

Refine by: