247 247 SM USA-247 Resolusi 247 Dewan Keamanan Perserikatan Bangsa-Bangsa Boeing 247 Isotop berkelium Isotop kurium Isotop kalifornium Isotop plutonium Isotop einsteinium Isotop amerisium
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247 247 SM USA-247 Resolusi 247 Dewan Keamanan Perserikatan Bangsa-Bangsa Boeing 247 Isotop berkelium Isotop kurium Isotop kalifornium Isotop plutonium Isotop einsteinium Isotop amerisium