| Issue | #310 |
| Published | April 1977 |
| Cover Price | 0.30 |
| Pages | 36 |
| Editing | Julius Schwartz |
| Notes | Superman |
| Characters | Superman; Metallo; green kryptonite |
| Genre | superhero |
| Pencils | Jose Luis Garcia-Lopez |
| Inks | Bob Oksner |
| Notes | Superman |
| Characters | Superman; S.T.A.R. Labs; Metallo [Roger Corben, the first Metallo's brother] (intro, villain); SKULL; Dr. Albert Michaels; Steve Lombard; Lois Lane; green kryptonite |
| Genre | superhero |
| Script | Martin Pasko |
| Pencils | Curt Swan |
| Inks | Tex Blaisdell |
| Reprinted | in Best of DC, The (DC, 1979 series) #54 |