RT Journal Article
SR Electronic
T1 Notes on the Cambrian rocks of Pennsylvania from the Susquehanna to the Delaware
JF American Journal of Science
JO Am J Sci
FD American Journal of Science
SP 37
OP 41
DO 10.2475/ajs.s3-47.277.37
VO s3-47
IS 277
A1 Walcott, Charles Doolittle
YR 1894
UL http://www.ajsonline.org/content/s3-47/277/37.abstract
AB