Vol. s3-34, Issue 199, 1887July 01, 1887 EDT
Notes on the Lower Carboniferous Groups Along the Easterly Side of the Appalachian Area in Pennsylvania and the Virginias
Notes on the Lower Carboniferous Groups Along the Easterly Side of the Appalachian Area in Pennsylvania and the Virginias
John James Stevenson,
Stevenson, J. J. (1887). Notes on the Lower Carboniferous groups along the easterly side of the Appalachian area in Pennsylvania and the Virginias. American Journal of Science, s3-34(199), 37–44. https://doi.org/10.2475/ajs.s3-34.199.37