Operation Xibalba

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Overview:

Unknown. Multiverse: Exploring Poul Anderson's Worlds (Unknown, Eric Flint, Subterranean Press, ISBN-10: 9781596065024, $40.00, 393 pages, Hardcover, Anthology)
Unknown. Multiverse: Exploring Poul Anderson's Worlds (Unknown, Eric Flint, Subterranean Press, ISBN-10: 9781596065024, $125.00, 393 pages, Hardcover, Anthology)
Unknown. Worlds II (Unknown, Eric Flint, Baen Books, ISBN-10: 9781481484206, $7.99, 776 pages, Paperback, Collection)
2014 . Multiverse: Exploring Poul Anderson's Worlds (2014, Eric Flint, Blackstone Audio, ISBN-10: 9781483039367, digital audio download, Anthology)
2015 . Multiverse: Exploring Poul Anderson's Worlds (2015, Eric Flint, Baen Books, ISBN-10: 9781476780597, $15.00, 391 pages, Trade Paperback, Anthology)
2015 . Multiverse: Exploring Poul Anderson's Worlds (2015, Eric Flint, Baen Books, ISBN-10: 9781625793942, $8.99, ebook, Anthology)
2016 . Multiverse: Exploring the Worlds of Poul Anderson (2016, Eric Flint, Baen Books, ISBN-10: 9781476781747, $7.99, 567 pages, Paperback, Anthology)
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)
2020 . Worlds 2 (2020, Eric Flint, Tantor Audio, ISBN-10: 9781541439740, $24.49, digital audio download, Collection)