=LDR 22 4500 =001 6675 =082 04$a2019 WES =100 1\$aWestcott, Hayley =245 10$aThe effects of visitor and environmental variables on the behavior of captive ring-tailed lemurs (Lemur catta) housed in a walk-through enclosure =260 \\$aDublin :$bUniversity of Dublin, Trinity College,$c2019 =650 \0$aTheses =852 \\$bFreeman Library$h2019 WES