"Pocono stratigraphy in the Broadtop Basin of Pennsylvania. "; "Reger, David B. (David Bright), 1882-1958."; "Geology--Pennsylvania.", "Geology, Stratigraphic."; "Reger, David B. (David Bright), 1882-1958."; "1927"; "Journal article reprint from: Bulletin of the Geological Society of America, v.38 (1927:June 30).
"; ""; "P5270"; "pec"; "Geology--Pennsylvania.", "Geology, Stratigraphic."; "14256"; .