Bedrock topography of northwest Iowa
Department of the Interior, U.S. Geological Survey ; by R.E. Hansen ; prepared in cooperation with the Iowa Geological Survey.
- Map; Government Document
- 1 map on 2 sheets : col. ; 83 x 144 cm., on sheets 97 x 81 cm. and 97 x 85 cm., folded in envelope 30 x 24 cm.
- Mathematical info
- Scale 1:125,000(W 9630ʹ--W 9430ʹ/N 4330ʹ--N 4245ʹ).
- Miscellaneous investigations series
- Reston, Va. :The Survey ;Denver, CO :For sale by Branch of Distribution,1986.
- West half
- East half
- Relief shown by contours and spot heights.
- Includes text and bibliography.
- Series statement
- Miscellaneous investigations series ; map I-1726
- Technical details