George Barr

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Fascinating Science Experiments for Young People (Dover Children's Science Books)
Barr, George

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� 1.78

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Sports Science for Young People (Dover Children's Science Books)
Barr, George

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� 3.96

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Outdoor Science Projects for Young People
Barr, George

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� 4.79

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Science Projects for Young People (Dover Children's Science Books)
Barr, George

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� 2.71

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Science Research Experiments for Young People
Barr, George

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� 5.26

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Fun with Science: 46 Entertaining Demonstrations
Barr, George

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� 8.33

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Science Tricks and Magic for Young People
Barr, George

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� 7.56

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