Yay! The annoying typo (in most previous editions) in Lori Ciana’s surname, misspelt "Ciani" for her first appearance in the book, has been corrected!
As mentioned in the other TMP novelization thread, one morning several years ago, I was answering another poster's question (here) about Lori - and accidentally found that the 1979 UK/Australian editions of the MMPB had a few additional lines in it, when compared to the various US editions.
eg. extra info in caps:
"Kirk fought to keep from screaming obscenities. It was Lori THERE. Sonak, too, but what was Lori doing up here? SHE MUST HAVE TAKEN A TEMPORARY RANK REDUCTION TO FILL THE ZENO-PSYCHOLOGY VACANCY ABOARD. AND NOW She was dying. And he was helpless to stop it." [Page 56, UK/Aust ed.; page 65, 1979 US ed.]
A more minor change:
"Starfleet in THREE minutes..." [Page 56, UK/Aust ed] -- not "five..." [Page 39, US ed.]
The 1979 UK/Australian editions of the MMPB also contained gorgeous colour photos.
I'm sure there was at least one more minor addition in the early chapters, but I hope to find any other modifications by reading along while listening to the unabridged Robert Petkoff audio.
The back cover blurbs are also very different:
"It came from an unexpected quarter of the galaxy.
It ignored all attempts to communicate with it.
And it annihilated all opposition with energy bolts of unimaginable ferocity.
Computer projections showed that it would enter the solar system in precisely three days.
The USS Enterprise, refitting in dry dock, was the only craft that Starfleet Command could send to intercept the Cloud in time..." [UK/Aust ed.]
***
"The Great Bird of the Galaxy writes a Star Trek novel!
The writer/producer who created Mr. Spock and all the other Star Trek characters - who invented the Starship Enterprise, who gave the show its look, its ideals - puts it all together again here in this first Star Trek novel!
"Their historic 5-year mission is over. Kirk, Spock, McCoy, Scotty, all the crew have scattered to other jobs or other lives. Now, they are back together again on a fabulously refitted USS Enterprise as an incredibly destructive POWER threatens Earth and the human race." [1979 US ed.]