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Contributions to Economic Geology: 1904
From letter of transmittal: The report contains 63 contributions from 37 members of the Survey who have been engaged more or less continuously throughout the year in economic work, together with brief statements by the geologists in charge of the section of metalliferous ores and the section of nonmetalliferous economic minerals, of the extent and character of the economic work being carried on in the Survey.
Date:
1905
Creator:
Emmons, Samuel Franklin & Hayes, C. W.
System:
The UNT Digital Library