Asobi ni kansuru kodomo no ishiki chōsa
By: [shippitsu tantō Shibazaki Yasumasa, Takuwa Hideo, Umezawa Mitsuhiro]
Series: Kiyō -- 38-shū; Kiyō (Yokosuka-shi Kyōiku Kenkyūjo) -- dai 38-gō.
Publisher: Yokosuka-shi Kyōiku Kenkyūjo
Published: 1974
Place of publication: Yokosuka-shi
Language: jpn
Number of pages: 40