Cenomanian Ammonite fauna from the Mosby Sandstone of Central Montana : geological survey professional paper 243-D
| Format: | Book |
|---|---|
| Language: | English |
| Published: |
[s.l.] :
[s.n.],
[19--]
|
| Series: | Professional paper / United States Geological Survey ;
243-E |
| Subjects: |