Fictional Narratives Of Different Lengths

Short Story
Novelette
Novella
Novel
Differences

I link to these definitions and differentiations first because Poul Anderson wrote all these forms and secondly because the contents page of The Technic Civilization Saga, Volume II, David Falkayn: Star Trader, specifies in brackets the form and size of each work. Thus, we are informed that:

Satan's World is a novel;
"A Little Knowledge" is a short story;
the remaining five works are novellas.

I would have appreciated the same information for all seven volumes. The Dominic Flandry series, before it was incorporated into the Saga, comprised six novels and two collections. Of the seven works collected in these two volumes:

"Tiger By The Tail," "Honorable Enemies" and "The Game of Glory" are short stories;
"A Message in Secret" and "A Plague of Masters" were each previously published as one part of an Ace Double;
"Hunters of the Sky Cave" was published both as part of an Ace Double and as a single volume;
"The Warriors from Nowhere" is a short story.

My rule of thumb for a novel is 100+ pages.

The single volume "Hunters of the Sky Cave," entitled We Claim These Stars!, is 121 pages.

In The Technic Civilization Saga, Volume V, Captain Flandry: Defender Of The Terran Empire, "A Message in Secret" is 57 pages.

In Vol VI, Sir Dominic Flandry: The Last Knight Of Terra:

"The Plague of Masters" is 145 pages;
"Hunters of the Sky Cave" is 151 pages.

So are there really eight Dominic Flandry novels?