Bulletin of the United States Geological Survey ; U.S. Geological Survey-Bulletin Geological Survey ; Bulletin-United States Geological Survey ; Bulletin 769 ; The geologic time classification of the United States Geological Survey compared with other classifications accompanied by the original definitions of era, period and epoch terms
Please do not destroy or throw away this publication. If you have no further use for it, write to the Geological Survey at Washington and ask for a frank to return it. ; Wilmarth, M. Grace (1866-1949). Odmienna nazwa autora
Jun 1, 2023
Jun 21, 2021
|Bulletin 769.||Jun 1, 2023|
Wilmarth, Mary Grace (1866-1949) United States of America. Geological Survey.