Pehrson, E. W. / Minerals yearbook 1945
Year 1945 (1947)
Moyer, Forrest T.
Employment and injuries in the mineral industries, pp. 1581-1596 PDF (1.9 MB)
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