RT Journal Article
SR Electronic
T1 The upper Devonian rocks of southwest Pennsylvania
JF American Journal of Science
JO Am J Sci
FD American Journal of Science
SP 423
OP 430
DO 10.2475/ajs.s3-15.90.423
VO s3-15
IS 90
A1 Stevenson, John James
YR 1878
UL http://www.ajsonline.org/content/s3-15/90/423.abstract
AB