Report of a geological survey of Wisconsin, Iowa, and Minnesota;and incidentally of a portion of Nebraska Territory /Made under instructions from the United States Treasury Department. By David Dale Owen, United States geologist.
1852 ◽
2009 ◽
Vol 9
(1)
◽
1996 ◽
Vol 19
(4)
◽
pp. 459-534
1932 ◽
Vol 24
(9)
◽
pp. 1281-1287