Bedrock topography of northeast Iowa
| Main Author: | Hansen, Robert E. |
|---|---|
| Other Authors: | Geological Survey (U.S.), Iowa Geological Survey. |
| Format: | Map |
| Language: | English |
| Published: |
Reston, Va. :
U.S. Geological Survey,
1975.
|
| Physical Description: |
1 map on 2 sheets : color ; 106 x 135 cm, folded in envelope 30 x 24 cm. |
| Series: |
Miscellaneous investigations series (Geological Survey (U.S.)) ;
map I-933. |
| Subjects: |