The Adobe logo indicates that documents are in PDF format.

PDF is an acronym for "Portable Document Format." PDF is a file format created by Adobe that lets you view and print a file exactly as the author designed it, without needing to have the same application or fonts used to create the file. Since its introduction in 1993, PDF has become an Internet standard for electronic distribution that faithfully preserves the look and feel of the original document.

You will need Adobe Reader to open & print these documents.  If you do not have Adobe Reader, it is free, and available online at  www.adobe.com.