by Randolph W. Bromery, Gerald L. Zandle, and others ; Department of the Interior, United States Geological Survey ; prepared in cooperation with the Commonwealth of Pennsylvania, Department of Internal Affairs
by Randolph W. Bromery, Gerald L. Zandle, and others ; Department of the Interior, United States Geological Survey ; prepared in cooperation with the Commonwealth of Pennsylvania, Department of Internal Affairs
by Randolph W. Bromery, Gerald L. Zandle, and others ; Department of the Interior, United States Geological Survey ; prepared in cooperation with the Commonwealth of Pennsylvania, Department of Internal Affairs
[Geological Survey of Pennsylvania ; J.P. Lesley, state geologist, anthracite district ; Charles A. Ashburner, geologist in charge ; A.W. Sheafer and Frank A. Hill, assistant geologists]
Date
1882
Series
Report of progress (Geological Survey of Pennsylvania) ; AA