Are you trying to open a apr file? Find here the right software which will enable you to view, open or edit Arcview Project File type.
An APR file is a project file created using ArcView.
ArcView is a Geographical Information System used to visualize and map geographical data. These files can be edited with a text editor.
An APR calculator for your web site.
Easy-to-use collection of 14 calculators.