Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Fujino Hiroshi,Development of Symbolic Play in Infants. Research Using the Symbolic Play Test.,The Japan Journal of Logopedics and Phoniatrics,0030-2813,The Japan Society of Logopedics and Phoniatrics,2002,43,1,21-29,https://cir.nii.ac.jp/crid/1390282679875949184,https://doi.org/10.5112/jjlp.43.21