The view/open link is for downloading the pdf file. (Agreed, it is very misleading.) I know this because my browser is set to always ask where I want a file to be downloaded to, and when I click on the view/open I get that inquiry box. You have probably been downloading a file each to you clicked on the "view/open", and have many copies in your download folder.
Go there and click on the appropriate pdf file. The first link I gave will download a file with this name:
CAT10633450.pdf
If you don't know where your download folder is, you can search for the aforementioned file via start>>search>>files and folders