Zhestokostʹ
Subtitle: Ispytatelʹnyĭ srok : povesti.
Publisher: Molodai͡a︡ gvardii͡a︡
Published: 1966
Place of publication: Moskva
Language: rus
Number of pages: 441
Other titles: Ispytatelʹnyĭ srok.
Notes: At head of title: Pavel Nilin.