Vol. s3-44, Issue 261, 1892September 01, 1892 EDT
The Devonian System of Eastern Pennsylvania
The Devonian System of Eastern Pennsylvania
Charles Smith Prosser,
Prosser, C. S. (1892). The Devonian system of eastern Pennsylvania. American Journal of Science, s3-44(261), 210–221. https://doi.org/10.2475/ajs.s3-44.261.210