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The Bobbsey Twins In the Mystery Cave
Laura Lee Hope
Hardcover (Grosset & Dunlap, March 1, 1960)The Bobbsey Twins in the Mystery Cave
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Bobbsey Twins in the Mystery Cave No 53
Hope, Laura Lee,
Hardcover (Grosset & Dunlap, March 15, 1960)None
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The Bobbsey twins in the mystery cave
Laura Lee Hope
Hardcover (World Distributors, March 15, 1961)None
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The Bobbsey Twins in the Mystery Cave
Laura Lee Hope
Hardcover (World Distributors Ltd, )None