Published January, 1977 (Bronze Age) by DC Comics and went on sale in 1977 for $0.30 USD. This issue contains ____ pages in Color, the current NM value is $10.00 USD.
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An interesting tale that feels familiar. Superman's one-man war on pollution has similar parallels to the Man of Steel's mission to end the nuclear arms race in 1987's Superman IV: The Quest for Peace. With newcomer baddie The Protector taking the side of the polluters, his motives are reminiscent of that film's antagonist, Nuclear Man. These coincidences make one wonder if Superman #307-309 were indirect influences of Superman IV screenwriters Christopher Reeve, Lawrence Konner and Mark Rosenthal.
