Title Tags
make bootable drive osx - Google Search
https://www.google.com/search?client=safari&rls=en&q=make+bootable+drive+osx&ie= ... 		bootable drive osx mac (edit)
huff gravity model: who will visit your store? - gis geography
http://gisgeography.com/huff-gravity-model/ 		huff drive time (edit)