In the Matter of Savinkov

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Overview:

Unknown. Worlds II (Unknown, Eric Flint, Baen Books, ISBN-10: 9781481484206, $7.99, 776 pages, Paperback, Collection)
2014 . The Aethers of Mars (2014, Eric Flint, Phoenix Pick, ISBN-10: 9781612421308, $14.99, 213 pages, Trade Paperback, Anthology)
2017 . Stellar Guild Box Set One (2017, Eric Flint, Phoenix Pick, ISBN-10: 9781612423494, $9.99, pages, ebook, Omnibus)
2018 . Worlds II (2018, Eric Flint, Baen Books, ISBN-10: 9781481483414, $16.00, 537 pages, Trade Paperback, Collection)
2018 . Worlds II (2018, Eric Flint, Baen Books, ISBN-10: 9781625796554, $8.99, ebook, Collection)
2019 . Venus, Mars and Hell (2019, Eric Flint, Eric Flint's Ring of Fire Press, ISBN-10: 9781948818476, $13.99, 198 pages, Trade Paperback, Anthology)
2019 . Venus, Mars and Hell (2019, Eric Flint, Eric Flint's Ring of Fire Press, ISBN-10: 9781948818469, $4.99, pages, ebook, Anthology)
2020 . Worlds 2 (2020, Eric Flint, Tantor Audio, ISBN-10: 9781541439740, $24.49, digital audio download, Collection)