So, Memory Alpha says there are four editions of the Starfleet Technical Manual. Does anyone know if these editions differ in any substantial ways?
I'm still a bit puzzled about the OP mentioning "4 editions." Although he could have simply mistaken the four different covers shown at the bottom of the article for distinct editions, rather than just four updates to the cover. (The cover picture at the top of the page appears to be from the original spot-color jacket-pocket-insert from the first Ballantine edition.)
Correct, the content was essentially the same right through the end.The content remains as it did from the first edition onward, though.
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