PPM

WEB SOURCE

WEBSOURCE

http://www.screencast.com/t/bYOa94KdgHb

TOOL

https://factfinder.census.gov/faces/nav/jsf/pages/index.xhtml#none

TOOL

https://www.huduser.gov/portal/datasets/socds.html

BOOK

https://play.google.com/books/reader?printsec=frontcover&output=reader&id=UgicDQAAQBAJ&pg=GBS.PT136.w.2.0.3.0.1