Graphite deposits of Pennsylvania,
Miller, Benjamin L. 1874-1944.
Graphite deposits of Pennsylvania, by Benjamin L. Miller ... - Harrisburg, C.E. Aughinbaugh, printer to the state of Pennsylvania, 1912. - 1 p. l., 148 p. plates, maps (part fold.) diagrs. (part fold.) 24 cm. - Pennsylvania. Topographic and geologic survey. Report no. 6 .
Bibliograhy: p. 129-140.
gs 14000059
Graphite--Pennsylvania
GA61.P4 / A5 no. 6
Graphite deposits of Pennsylvania, by Benjamin L. Miller ... - Harrisburg, C.E. Aughinbaugh, printer to the state of Pennsylvania, 1912. - 1 p. l., 148 p. plates, maps (part fold.) diagrs. (part fold.) 24 cm. - Pennsylvania. Topographic and geologic survey. Report no. 6 .
Bibliograhy: p. 129-140.
gs 14000059
Graphite--Pennsylvania
GA61.P4 / A5 no. 6