Iceland spar and optical fluorite /

Mode of access: Internet.

Bibliographic Details
Main Authors: Hughes, H. Herbert (Harry Herbert), 1905-, United States. Bureau of Mines.
Format: Text
Language:English
Published: Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines 1941
Subjects:
Online Access:http://hdl.handle.net/2027/mdp.39015074127484
http://hdl.handle.net/2027/mdp.39015095085927
Description
Summary:Mode of access: Internet.