There has been data ("Polish Spies: Krystyna Skarbek, Kazimierz Leski, Marcel Reich-Ranicki, Jerzy Sosnowski, Ryszard Kukli?ski, Jan Kowalewski, Sergiusz") available for this ISBN from the data sources that books-by-isbn.com uses, but not on the latest request on Thu Jan 30 05:20:10 2020, so the data displayed here has been removed .