This issue is a variant of Swamp Thing (DC, 1987 series) # - Saga of the Swamp Thing [First Printing]. There exist further variants.
Despite how we have it listed here, the title is simply Saga of the Swamp Thing.
Collects The Saga of Swamp Thing (DC, 1982 series) #21-27.
Short biographies of Alan Moore, Stephen Bissette, and John Totleben.