http://wps.prenhall.com/esm_rubenstein_humangeo_8/

http://bcs.wiley.com/he-bcs/Books?action=index&bcsId=7014&itemId=1118018699

http://www.learningpod.com/workbook/kaplan-s-ap-human-geography/1d13f096-d217-4d80-a742-2e8e6a72bbdb

http://www.appracticeexams.com/ap-human-geography

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