Author: Raymond, P. E.
Title: Some trilobites of the lower Middle Ordovician of eastern North America.
Description: Cambridge, MA, The Museum of Comparative Zoölogy, 1925. 8vo. 180 pp.; ten plates with explanatory text leaves. Original printed wrappers. = A nicely illustrated monograph with several new species and revisions of others. Uncut. Published in the Museum's Bulletin series. A very unobtrusive stamp on front wrapper, otherwise an excellent and clean copy. Rare.

Keywords: