Filtered magnetic anomaly maps of Illinois /
| Corporate Author: | |
|---|---|
| Other Authors: | , |
| Format: | Government Document Map |
| Language: | English |
| Published: |
Reston, VA :
The Survey ;
1992.
|
| Series: | Geophysical investigations (Geological Survey (U.S.)) ;
GP-999. |
| Subjects: |
| Item Description: | Includes text and bibliography. Cartographic material. |
|---|---|
| Physical Description: | 4 maps on 2 sheets : color ; 35 x 62 cm., sheets 86 x 79 cm. and 76 x 79 cm., folded in envelope 30 x 24 cm. |