Deleting duplicate pages in a word document

[Luke]

I am an agency researcher who has recently download a html
document from the internet. To my suprise I noticed that
the document is over 300 pages long. Upon closer
inspection of the document I noticed that there are a
number of duplicate pages throughout the document that
have made it so large. I converted the html document to a
word document by renaming the extention from .html to .doc
I did this in the hope that word would have some kind of
tool to delete duplicate pages throughout the document.
Unfortunately I have been unable to find a solution. Could
anyone please send be a step by step guide on how I can
delete duplicate pages throughout the document? Help would
be appreciated

Yours sincerely Luke