@unpublished{Peircend,
author = "Charles S. Peirce",
title = "{Cardinal Number [R]. MS [R] 43}",
year = nd,
abstract = "{Robin Catalogue:
A. MS., n.p., n.d., pp. 36-38.
Mathematical calculations on the versos of these pages.
}",
keywords = "Cardinal Number",
language = "English",
note = "From the Commens Bibliography | \url{http://www.commens.org/bibliography/manuscript/peirce-charles-s-nd-cardinal-number-r-ms-r-43}"
}
