His work for DC Comics includes writing for Justice League Quarterly , Who 's Who in the DC Universe , and Wonder Woman ' 77 .
Since the 1990s Mangels has written comic book stories and text pieces for several major publishers .
Mangels ' work for DC Comics includes writing for Justice League Quarterly , Who 's Who in the DC Universe , and Wonder Woman ' 77 .
Since the 1990s Mangels has written comic book stories and text pieces for several major publishers .