Bureau of Mines / Minerals yearbook area reports: domestic 1978-79
Year 1978-79, Volume 2 (1978-1979)
Aase, James H.; West, Wanda J.; Anderson, Raymond R.
Iowa, pp. 201-211 ff.
As a work of the United States government, this material is in the public domain.| For information on re-use see: http://digital.library.wisc.edu/1711.dl/Copyright