McKnown, Robin
The fabulous isotopes
Holiday House, 1962
Buku Teks SO
Coxe, Antony Hippisley
A seat at the circus
Macmillan, 1980
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Coppard, AE
Silver circus
[T.t.] [t.p.] [t.th.]
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Walker, Jearl, 1945-
The flying circus of physics
John Wiley & Sons, 1977
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Vaessens, Thomas
Circus Dubio & Schroom
De Arbeiderspers , 1998
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