Cambridge Histories Online - Multiple Subjects Cambridge Histories is the essential reference collection spanning 350 volumes in 10 subject areas.
Oxford Reference Library - Multiple Subjects Oxford Reference is the premier online reference product, spanning 25 different subject areas, bringing together 2 million digitized entries across Oxford University Press’s Dictionaries, Companions and Encyclopedias.
East View Slavic Reference and Statistics eBooks A collection of 266 Reference & Statistics eBooks, originally published in Russia.