07.25.07 by Dorothy 0 comments on "Schedule C Principal Business or Professional Activity Codes Table, Part 31" Schedule C Principal Business or Professional Activity Codes Table, Part 31 Share this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on Tumblr (Opens in new window)Click to email a link to a friend (Opens in new window)