This issue has variants.
Double-Sized Issue
in Wizard X-Men Masterpiece Edition (Marvel; Wizard, 2003 series) #1 (December 2003) [cover]
in Marvel Gold. La Imposible Patrulla-X (Panini España, 2011 series) #3 - Vs. Magneto (Noviembre 2012)
in Essential X-Men (Marvel, 1996 series) #3
in L' Uomo Ragno (Edizioni Star Comics, 1987 series) #35 (30 Ottobre 1989), #36 (15 Novembre 1989)
in X-Men Classic (Marvel, 1990 series) #54 (December 1990)
in Wizard X-Men Masterpiece Edition (Marvel; Wizard, 2003 series) #1 (December 2003)
in Marvel Gold. La Imposible Patrulla-X (Panini España, 2011 series) #3 - Vs. Magneto (Noviembre 2012)
in Essential X-Men (Marvel, 1996 series) #3Note 1: Inker and letterer page credits added 2005 by Steven Tice.
Note 2: Dave Cockrum reports 2006 that "I did loose pencils in blue. Editor Ann Nocenti referred to them as 'shakedowns'. But everything was there."
Note 3: Magneto seems to be living in something similar to the Lovecraftian sunken island/city of R'Lyeh.