1. Lower Pennsylvanian species of mariopteris, eremopteris, diplothmema, and aneimites from the Appalachian region Author/Creator: White, David, 1862-1935 Publication/Creation: Washington : U.S. Govt. Print. Off, 1943 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 197 A-F. Access & Availability: Loading
2. Lower Pennsylvanian species of mariopteris, eremopteris, diplothmema, and aneimites from the Appalachian region Author/Creator: White, David, 1862-1935, author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1943 Resource Type: Book Access & Availability: Loading