Bibliographic index of American Ordovician and Silurian fossils
By: by Ray S. Bassler.
Series: Smithsonian Institution. United States National Museum. Bulletin -- 92; Bulletin (United States National Museum) -- 92.
Publisher: Govt. Print. Off.
Published: 1915
Place of publication: Washington
Subjects: Paleontology -- Ordovician -- Bibliography; Paleontology -- Silurian -- Bibliography