Johnson, Leslie K.Bagshaw, Hadley S.2014-09-222026-09-292014-09-222026-09-2919933994http://arks.princeton.edu/ark:/88435/dsp015x21th43ghttps://theses-dissertations.princeton.edu/handle/88435/dsp015x21th43g103 PagesPlay Behavior: A Philosophy of Mind and an Observational Study of Western Lowland GorillasPrinceton University Senior ThesesWalk-in Access. This thesis can only be viewed on computer terminals at the <a href=http://mudd.princeton.edu>Mudd Manuscript Library</a>.