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Thuvia
http://www.gutenberg.net/browse/BIBREC/BR72.HTM
E-text at Project Gutenberg.
Thuvia, Maid of Mars
http://www.umich.edu/~umfandsf/other/ebooks/mmars10.txt
Text of the work in plain-text format.
Thuvia, Maid of Mars
http://www-2.cs.cmu.edu/People/rgs/mmars-table.html
Chapter-indexed HTML text. Project Gutenberg edition.