Erickson_1992.pdf
Ferguson_2000.pdf
Gonzales_footprints_2005.pdf
Hastorf_1996.pdf
Heckenberger_2003.pdf
Johnson_chapter_1.pdf
Johnson_chapter_2.pdf
Johnson_chapter_3.pdf
Johnson_chapter_7.pdf
Luby_1999.pdf
Mann_2000.pdf
McNiven_2005.pdf
Meggars_2003.pdf
Renee_footprints_2005.pdf
whitley_1998.pdf