Two manga adaptations were created, the first published in Shogakukan's Weekly Shōnen Sunday from July 28 to November 17, 1968, and a 4-chapters series in Shueisha's Weekly Shōnen Jump from May 22 to July 10, 1969.
Two manga adaptations were produced, one appearing in Shogakukan's Weekly Shōnen Sunday from July 28th to November 17th, 1968, and another in Shueisha's Weekly Shōnen Jump from May 22nd to July 10th, 1969.