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John C. Ferm

1925

  • A Study of roof falls in underground mines on the Pocahontas #3 seam, southern West Virginia and southwestern VirginiaA Study of roof falls in underground mines on the Pocahontas #3 seam, southern West Virginia and southwestern Virginia
  • A field guide to Allegheny deltaic deposits in the upper Ohio ValleyA field guide to Allegheny deltaic deposits in the upper Ohio Valley
  • A field guide to carboniferous detrital rocks in northern AlabamaA field guide to carboniferous detrital rocks in northern Alabama
  • Cored rocks of the southern Appalachian coal fieldsCored rocks of the southern Appalachian coal fields