The Geologic Time Classificatin fo the Unites States Geological Survey compared with other Classifications
M. Grace Wilmarth
The Geologic Time Classificatin fo the Unites States Geological Survey compared with other Classifications Image Cover
Publisher:USGS
Place Published:Washington, DC
Genre:Geology
Series:Bulletin 769
Pages:138+plate
Format:Paperback
Release:1925
Comments: Accompanied by The Original Definitions of Era, Period, and Epoch Terms

Summary: