This issue is a variant of 2001, A Space Odyssey (Marvel, 1976 series) #9 [30¢ Cover Price].
There exist further variants.
Giacoia credit by Nick Caputo, Jan 2011. Previous indexer credited Mike Esposito.
Includes letters from Mark Andrew Malamud and Cary Hammer (in one letter), Mike Christiansen and N.V. Triumph.