22 déc. 1857 - Leo Lesquereux's coal flora of Penn-
sylvania, published
in the report of H. D. Rogers
Description:
this one?
https://archive.org/details/geologyofpennsyl02geolrich
THIS ONE>>>>>
https://archive.org/details/geologyofpennsyl02penn
<<<<
Ajouté au bande de temps:
Bartram Barton
Date: