Filme SF, Anii 1948, SUA, Invazie

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  Not of This Earth (1957)

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  Enemy from Space (1957)

  Quatermass II

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  Invasion of the Body Snatchers (1956)

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  This Island Earth (1955)

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  Razboiul Lumilor (1953)

  The War of the Worlds

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  Invaders From Mars (1953)