PROCESS
I got a friend to draw two dots on trace paper:
I then placed this over an area on a map selected by the same friend who drew the dots:
Use the house numbers corresponding with the random dots: 25 and 151
Minus/add the two numbers until you get a single number: 151-25 = 126, add all = 9 (9th book on the shelf)
Use the numbers to find a word: the first number (25) is the page number, the second number (151) is the word count down the page.
Found my word: Topography