This is the issue that moved Micronauts to a 32-page, no advertisements, 75 cent, direct market book. From here on out, you could only find it in comic book stores.
Here’s how they explained it on the Micromails letters page:
It was a new way to respond to sales figures for books like this one, Ka-Zar, and Moon Knight, which tended to attrack more of a “cult” following.
Mantlo used this opportunity to tell the back story of Commander Rann and Baron Karza.