Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) TANAKA Masayuki and TAKARADA Kazuki and NAGAO Mitsunori and KAMANARU Hiroe and YAMAMOTO Yuuki,Nocturnal behavior during the periparturitional period in a captive western gorilla (Gorilla gorilla),Primate Research Supplement,,Primate Society of Japan,2012,28,0,89,https://cir.nii.ac.jp/crid/1390282680610680576,https://doi.org/10.14907/primate.28.0_89