<human>: Hey /r/books, I recently purchased Lord of the Rings : Return of the King. Now, my book is the revised version (1978 published by Houghton Mifflin) and after 300 or so pages in (I have't read the book, yet) the book ends, and from around page 300 to 440 is this huge appendix. 
Now, I'm not sure if thats how long the book is supposed to be (roughly because obviously books page size and size font can vary) because I have copies of LOTR Fellowship of the Ring and Two Towers both published by the same , Houghton Mifflin. The first is around 400 pages, and two towers is around 500, but, Return - 300 pages?
I'm wondering if I should go back to the local used book store where I bought it and return it and pick up a different edition. 
So, /r/books, my question I ask is , is my edition fine as in, not shortened, or is it shortened in any way?
Thanks in advance, I hope to hear good news that it's fine!

Can you provide a brief overview of the text?
<bot>: my copy of Lord of the Rings: Return of the King is 300 pages, shorter than the other two books I own, is it supposed to be this way?