For viewing ' pdf ' files, you should have any version of 'Adobe Acrobat'.
If you have 'Adobe Acrobat ', and it doesn't show your ' pdf ' files, just do the following steps :

 

  1.   Right click on the ' pdf ' link.
  2.   Select  "Save Target As ..." from the menu.
  3.   Save the file on your computer.
  4.   Run the file from your computer.
 
   ...or click on the pdf.zip and download pdf.zip file on your computer.