長編推理小說仮面の人
By: Nanjō Norio [i.e. Koga Hidemasa] cho
Series: Kappa noberusu
Publisher: Kōbunsha
Published: 1962
Place of publication: Tōkyō
Language: jpn
Number of pages: 272
Other titles: Chōhen suiri shōsetsu kamen no hito; Kamen no hito