Earth S.O.S.! (地球SOS！の巻 Chikyū EsuŌEsu no Maki) is the third volume of the Dr. Slump manga series written by Akira Toriyama. It was released on December 10, 1980 in Japan and in September 6, 2005 for the English version. Set in 1980, this volume most notably deals with the introductions of Donbe, Kinoko Sarada and King Nikochan as well as the adventure on Wonder Island.