Perseus (spy): Perbedaan antara revisi

 

* {{cite journal |last= Sagdeev |first= Roald |date= May 1993 |year= 1993 |title= Russian scientist save American secrets |url= https://books.google.com/books?id=qQwAAAAAMBAJ |access-date= November 11, 2020 |format= Google Books |journal= [[Bulletin of the Atomic Scientists]] |language= en |volume= 49 |issue= 4 |pages= 32–36 |doi= 10.1080/00963402.1993.11456342}}

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