The story is fine for what it is - a short juvenile in the style of Heinlein and a hundred others of the time. Side are black and white and the tale is straightforward, even though the villains are thoroughly bland and the science either ludicrous, unexplained, or swiftly overtaken by actual events. MY favorite part of reading this wasn't the story at all, but rather the story behind the edition that I read. There is a little note preceding the title page saying:
"This is an authorized facsimile
of an original book,
and was producers in 1975 by microfilm-xerography
by Xerox University Microfilms,
Ann Arbor, Michigan, U.S.A"
What ever that system was on is, it only prints on one side of a sheet, because every page is looped and uncut, and the interiors are unprinted. How this decidedly mediocre work was chosen for printing is a mystery I'd like to know the story behind.