Report of progress in the Clearfield and Jefferson district of the bituminous coalfields of western Pennsylvania

MLA

Platt, Franklin. Report of progress in the Clearfield and Jefferson district of the bituminous coalfields of western Pennsylvania. Harrisburg : Pub. by the Board of Commissioners of the Second geological survey, 1875.

APA

Platt, F. (1875). Report of progress in the Clearfield and Jefferson district of the bituminous coalfields of western Pennsylvania. Harrisburg : Pub. by the Board of Commissioners of the Second geological survey.

Chicago

Platt, Franklin. Report of progress in the Clearfield and Jefferson district of the bituminous coalfields of western Pennsylvania. Harrisburg : Pub. by the Board of Commissioners of the Second geological survey, 1875.