This issue is a variant of Devil Dinosaur (Marvel, 1978 series) #6.
Variants of this type were distributed under limited deals between publishers and distribution "jobbers" (Whitman was one, but not the only one) who could get comics into outlets that did not consistently carry comics. The retail unit was a bag containing more than one comic.
Letters of comment from readers Randy Binney, Paul Fricke, Ricky Martin, and David Davies.
Page also includes a promotional advertisement for Machine Man.