America not discovered by Columbus, a historical sketch of the discovery of America by the Norsemen in the tenth century; with an appendix on the historical, linguistic, literary and scientific value of the Scandinavian languages
by
Anderson, Rasmus Björn, 1846-1936
series:
Unknown
first published:
Unknown
An introduction to the history of science
by
Libby, Walter, 1867-
series:
Unknown
first published:
Unknown