title: Space use selectivity by chimpanzees and gorillas in an indoor-outdoor enclosure.
authors.affiliation: Lester E. Fisher Center for the Study and Conservation of Apes, Lincoln Park Zoo, 2001 North Clark Street, Chicago, IL 60614, USA. sross@lpzoo.org
authors.forename: S R
authors.initials: SR
authors.lastname: Ross
authors.forename: S
authors.initials: S
authors.lastname: Calcutt
authors.forename: S J
authors.initials: SJ
authors.lastname: Schapiro
authors.forename: J
authors.initials: J
authors.lastname: Hau