Green Lantern : Emerald Knights(1998)
A novel by Ron Marz
Green Lantern Kyle Rayner brings his predecessor, Hal Jordan, on a time-travel journey from the past to today to meet the JLA and battle Hals future-self, the cosmic villain called Parallax.
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Used availability for Ron Marz's Green Lantern : Emerald Knights
November 1998 : USA Paperback