John Van Vleck : Tofauti kati ya masahihisho

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d roboti Nyongeza: no:John H. van Vleck
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[[mr:जॉन हॅसब्रूक व्हान व्लेक]]
[[nl:John van Vleck]]
[[no:John H. van Vleck]]
[[pl:John Hasbrouck van Vleck]]
[[pt:John Hasbrouck van Vleck]]