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Atualizado em 13/05/2026 · De todos da iMusic
![Cover for Ivan Rival · Ordered Sets: Proceedings of the NATO Advanced Study Institute held at Banff, Canada, August 28 to September 12, 1981 - NATO Science Series C (Paperback Book) [Softcover reprint of the original 1st ed. 1982 edition] (2011)](https://imusic.b-cdn.net/images/item/original/003/9789400978003.jpg?ivan-rival-2011-ordered-sets-proceedings-of-the-nato-advanced-study-institute-held-at-banff-canada-august-28-to-september-12-1981-nato-science-series-c-paperback-book&class=scaled&v=1611412416)
![Cover for Ivan Rival · Graphs and Order: The Role of Graphs in the Theory of Ordered Sets and Its Applications - NATO Science Series C (Paperback Book) [Softcover reprint of the original 1st ed. 1985 edition] (2011)](https://imusic.b-cdn.net/images/item/original/480/9789401088480.jpg?ivan-rival-2011-graphs-and-order-the-role-of-graphs-in-the-theory-of-ordered-sets-and-its-applications-nato-science-series-c-paperback-book&class=scaled&v=1604572420)
![Cover for Ivan Rival · Algorithms and Order - Nato Science Series C (Paperback Book) [Softcover Reprint of the Original 1st Ed. 1989 edition] (2011)](https://imusic.b-cdn.net/images/item/original/913/9789401076913.jpg?ivan-rival-2011-algorithms-and-order-nato-science-series-c-paperback-book&class=scaled&v=1585267193)
![Cover for Ivan Rival · Graphs and Order: The Role of Graphs in the Theory of Ordered Sets and Its Applications - NATO Science Series C (Hardcover Book) [1985 edition] (1985)](https://imusic.b-cdn.net/images/item/original/430/9789027719430.jpg?ivan-rival-1985-graphs-and-order-the-role-of-graphs-in-the-theory-of-ordered-sets-and-its-applications-nato-science-series-c-hardcover-book&class=scaled&v=1531284223)
![Cover for Ivan Rival · Ordered Sets: Proceedings of the NATO Advanced Study Institute held at Banff, Canada, August 28 to September 12, 1981 - NATO Science Series C (Hardcover Book) [1982 edition] (1982)](https://imusic.b-cdn.net/images/item/original/964/9789027713964.jpg?ivan-rival-1982-ordered-sets-proceedings-of-the-nato-advanced-study-institute-held-at-banff-canada-august-28-to-september-12-1981-nato-science-series-c-hardcover-book&class=scaled&v=1609712809)