000 72 003 PGUSA 008 930701s1993||||xxu|||||s|||||000 | eng d 040 PGUSA eng 042 dc 050 4 PS 100 1 Burroughs, Edgar Rice, 1875-1950 245 10 Thuvia [electronic resource] / by Edgar Rice Burroughs 260 Project Gutenberg, 1993 500 Project Gutenberg 506 Freely available. 516 Electronic text 653 0 Science fiction 830 0 Project Gutenberg 72 856 40 http://www.gutenberg.org/etext/72 856 42 http://www.gutenberg.org/license Rights